The Collaborative International Dictionary of English v.0.48:

Sop \Sop\, n. [OE. sop, soppe; akin to AS. s?pan to sup, to sip,
   to drink, D. sop sop, G. suppe soup, Icel. soppa sop. See
   Sup, v. t., and cf. Soup.]
   1. Anything steeped, or dipped and softened, in any liquid;
      especially, something dipped in broth or liquid food, and
      intended to be eaten.
      [1913 Webster]

            He it is to whom I shall give a sop, when I have
            dipped it.                            --John xiii.
                                                  26.
      [1913 Webster]

            Sops in wine, quantity, inebriate more than wine
            itself.                               --Bacon.
      [1913 Webster]

            The bounded waters
            Should lift their bosoms higher than the shores,
            And make a sop of all this solid globe. --Shak.
      [1913 Webster]

   2. Anything given to pacify; -- so called from the sop given
      to Cerberus, as related in mythology.
      [1913 Webster]

            All nature is cured with a sop.       --L'Estrange.
      [1913 Webster]

   3. A thing of little or no value. [Obs.] --P. Plowman.
      [1913 Webster]

   Sops in wine (Bot.), an old name of the clove pink,
      alluding to its having been used to flavor wine.
      [1913 Webster]

            Garlands of roses and sops in wine.   --Spenser.
      [1913 Webster]

   Sops of wine (Bot.), an old European variety of apple, of a
      yellow and red color, shading to deep red; -- called also
      sopsavine, and red shropsavine.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Sop \Sop\, v. t. [imp. & p. p. Sopped; p. pr. & vb. n.
   Sopping.]
   To steep or dip in any liquid.
   [1913 Webster]

WordNet (r) 3.0 (2006):

sop
    n 1: piece of solid food for dipping in a liquid [syn: sop,
         sops]
    2: a concession given to mollify or placate; "the offer was a
       sop to my feelings"
    3: a prescribed procedure to be followed routinely; "rote
       memorization has been the educator's standard operating
       procedure for centuries" [syn: standing operating
       procedure, standard operating procedure, SOP, standard
       procedure]
    v 1: give a conciliatory gift or bribe to
    2: be or become thoroughly soaked or saturated with a liquid
       [syn: sop, soak through]
    3: dip into liquid; "sop bread into the sauce"
    4: cover with liquid; pour liquid onto; "souse water on his hot
       face" [syn: drench, douse, dowse, soak, sop,
       souse]

Moby Thesaurus II by Grady Ward, 1.0:

94 Moby Thesaurus words for "sop":
   Milquetoast, ass, baby, baksheesh, bathe, big baby, boodle,
   born fool, brew, bribe, bribe money, buffoon, buy, buy off,
   chicken, clown, crybaby, deluge, doodle, doormat, douche, douse,
   drench, drouk, drown, dull tool, egregious ass, figure of fun, fix,
   flush, fool, gratification, gratuity, gutless wonder, have,
   hush money, ignoramus, imbrue, imbue, impregnate, infiltrate,
   infuse, inject, invertebrate, jackass, jellyfish, lave, leach,
   lightweight, lixiviate, lubricate, lunatic, macerate, meek soul,
   milksop, mollycoddle, mooncalf, namby-pamby, nebbish, nonentity,
   palm oil, pansy, pantywaist, payoff, payola, percolate,
   perfect fool, permeate, protection, pushover, rinse, sad sack,
   saturate, schmuck, seethe, sissy, soak, sodden, softhead, softling,
   softy, souse, square, steep, stupid ass, sugarplum, tamper with,
   tomfool, wash, waterlog, weak sister, weakling, wet, zany



V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

SOP
       Standard Operating Procedure


Easton's 1897 Bible Dictionary:

Sop
   a morsel of bread (John 13:26; comp. Ruth 2:14). Our Lord took a
   piece of unleavened bread, and dipping it into the broth of
   bitter herbs at the Paschal meal, gave it to Judas. (Comp. Ruth
   2:14.)