The Collaborative International Dictionary of English v.0.48:

Curse \Curse\, v. i.
   To utter imprecations or curses; to affirm or deny with
   imprecations; to swear.
   [1913 Webster]

         Then began he to curse and to swear.     --Matt. xxi.
                                                  74.
   [1913 Webster]

         His spirits hear me,
         And yet I need must curse.               --Shak.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Curse \Curse\, n. [AS. curs. See Curse, v. t.]
   1. An invocation of, or prayer for, harm or injury;
      malediction.
      [1913 Webster]

            Lady, you know no rules of charity,
            Which renders good for bad, blessings for curses.
                                                  --Shak.
      [1913 Webster]

   2. Evil pronounced or invoked upon another, solemnly, or in
      passion; subjection to, or sentence of, divine
      condemnation.
      [1913 Webster]

            The priest shall write these curses in a book.
                                                  --Num. v. 23.
      [1913 Webster]

            Curses, like chickens, come home to roost. --Old
                                                  Proverb.
      [1913 Webster]

   3. The cause of great harm, evil, or misfortune; that which
      brings evil or severe affliction; torment.
      [1913 Webster]

            The common curse of mankind, folly and ignorance.
                                                  --Shak.
      [1913 Webster]

            All that I eat, or drink, or shall beget,
            Is propagated curse.                  --Milton.
      [1913 Webster]

   The curse of Scotland (Card Playing), the nine of diamonds.


   Not worth a curse. See under Cress.

   Syn: Malediction; imprecation; execration. See Malediction.
        [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Curse \Curse\ (k?rs), v. t. [imp. & p. p. Cursed (k?rst) or
   Curst; p. pr. & vb. n. Cursing.] [AS. cursian, corsian,
   perh. of Scand. origin; cf. Dan. korse to make the sign of
   the cross, Sw. korsa, fr. Dan. & Sw. kors cross, Icel kross,
   all these Scand. words coming fr. OF. crois, croiz, fr. L.
   crux cross. Cf. Cross.]
   1. To call upon divine or supernatural power to send injury
      upon; to imprecate evil upon; to execrate.
      [1913 Webster]

            Thou shalt not . . . curse the ruler of thy people.
                                                  --Ex. xxii.
                                                  28.
      [1913 Webster]

            Ere sunset I'll make thee curse the deed. --Shak.
      [1913 Webster]

   2. To bring great evil upon; to be the cause of serious harm
      or unhappiness to; to furnish with that which will be a
      cause of deep trouble; to afflict or injure grievously; to
      harass or torment.
      [1913 Webster]

            On impious realms and barbarous kings impose
            Thy plagues, and curse 'em with such sons as those.
                                                  --Pope.
      [1913 Webster]

   To curse by bell, book, and candle. See under Bell.
      [1913 Webster]

WordNet (r) 3.0 (2006):

curse
    n 1: profane or obscene expression usually of surprise or anger;
         "expletives were deleted" [syn: curse, curse word,
         expletive, oath, swearing, swearword, cuss]
    2: an appeal to some supernatural power to inflict evil on
       someone or some group [syn: execration, condemnation,
       curse]
    3: an evil spell; "a witch put a curse on his whole family"; "he
       put the whammy on me" [syn: hex, jinx, curse, whammy]
    4: something causing misery or death; "the bane of my life"
       [syn: bane, curse, scourge, nemesis]
    5: a severe affliction [syn: curse, torment]
    v 1: utter obscenities or profanities; "The drunken men were
         cursing loudly in the street" [syn: curse, cuss,
         blaspheme, swear, imprecate]
    2: heap obscenities upon; "The taxi driver who felt he didn't
       get a high enough tip cursed the passenger"
    3: wish harm upon; invoke evil upon; "The bad witch cursed the
       child" [syn: curse, beshrew, damn, bedamn,
       anathemize, anathemise, imprecate, maledict] [ant:
       bless]
    4: exclude from a church or a religious community; "The gay
       priest was excommunicated when he married his partner" [syn:
       excommunicate, unchurch, curse] [ant: communicate]

Moby Thesaurus II by Grady Ward, 1.0:

209 Moby Thesaurus words for "curse":
   Jonah, abuse, accurse, adverse circumstances, adversity, afflict,
   affliction, aggravation, aggrieve, anathema, anathematize,
   annoyance, bad influence, bad language, bane, befoul, bewitch,
   bitter cup, bitter draft, bitter draught, bitter pill, blaspheme,
   blasphemy, blast, blight, bugbear, bummer, burden, burden of care,
   calamity, cankerworm of care, cantrip, care, catamenia,
   catamenial discharge, charm, commination, condemn, confound,
   corrupt, courses, cross, crown of thorns, crucify, crushing burden,
   curse and swear, cuss, cuss word, damage, damn, damnation, damning,
   darn, death, defile, denounce, denunciation, deprave, despoil,
   destroy, destruction, difficulties, difficulty, dirty name,
   dirty word, disadvantage, disease, disserve, distress,
   do a mischief, do evil, do ill, do wrong, do wrong by, doom,
   downer, dysphemism, dysphemize, enchantment, encumbrance, envenom,
   epithet, evil, evil eye, evil genius, evil star, excommunicate,
   execrate, execration, exorcism, expletive, flowers, foul invective,
   fulminate against, gall, gall and wormwood, get into trouble,
   glamour, grievance, handicap, harass, hard knocks, hard life,
   hard lot, hardcase, hardship, harm, hex, hoodoo, hurt, ill wind,
   impair, imprecate, imprecation, infect, infliction, injure,
   irritation, jinx, load, magic spell, malediction,
   malevolent influence, malocchio, maltreat, menace, menses,
   menstrual discharge, menstruation, misfortune, mistreat, molest,
   monthlies, naughty word, nemesis, no-no, oath, objurgate,
   objurgation, obscenity, open wound, oppression, outrage,
   pack of troubles, peck of troubles, period, periods, persecute,
   pest, pestilence, plague, play havoc with, play hob with, plight,
   poison, pollute, predicament, prejudice, pressure, profanation,
   profane oath, profanity, rigor, running sore, sacrilege, saddle,
   savage, scathe, scatologize, scourge, sea of troubles, sorrow,
   spell, stress, stress of life, swear, swear at, swearword, taint,
   talk dirty, that time, the curse, thorn, threaten, throw a whammy,
   thunder against, torment, torture, trial, tribulation, trouble,
   troubles, vale of tears, vexation, vicissitude, vilify, violate,
   visitation, voodoo, wanga, waters of bitterness, weigh down,
   weight, weird, whammy, woe, wound, wreak havoc on, wrong



Easton's 1897 Bible Dictionary:

Curse
   denounced by God against the serpent (Gen. 3:14), and against
   Cain (4:11). These divine maledictions carried their effect with
   them. Prophetical curses were sometimes pronounced by holy men
   (Gen. 9:25; 49:7; Deut. 27:15; Josh. 6:26). Such curses are not
   the consequence of passion or revenge, they are predictions.

     No one on pain of death shall curse father or mother (Ex.
   21:17), nor the prince of his people (22:28), nor the deaf (Lev.
   19:14). Cursing God or blaspheming was punishable by death (Lev.
   24:10-16). The words "curse God and die" (R.V., "renounce God
   and die"), used by Job's wife (Job 2:9), have been variously
   interpreted. Perhaps they simply mean that as nothing but death
   was expected, God would by this cursing at once interpose and
   destroy Job, and so put an end to his sufferings.


The Devil's Dictionary (1881-1906):

CURSE, v.t.  Energetically to belabor with a verbal slap-stick.  This
is an operation which in literature, particularly in the drama, is
commonly fatal to the victim.  Nevertheless, the liability to a
cursing is a risk that cuts but a small figure in fixing the rates of
life insurance.