The Collaborative International Dictionary of English v.0.48:

Prince \Prince\, n. [F., from L. princeps, -cipis, the first,
   chief; primus first + capere to take. See Prime, a., and
   Capacious.]
   1. The one of highest rank; one holding the highest place and
      authority; a sovereign; a monarch; -- originally applied
      to either sex, but now rarely applied to a female.
      --Wyclif (Rev. i. 5).
      [1913 Webster]

            Go, Michael, of celestial armies prince. --Milton.
      [1913 Webster]

            Queen Elizabeth, a prince admirable above her sex.
                                                  --Camden.
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   2. The son of a king or emperor, or the issue of a royal
      family; as, princes of the blood. --Shak.
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   3. A title belonging to persons of high rank, differing in
      different countries. In England it belongs to dukes,
      marquises, and earls, but is given to members of the royal
      family only. In Italy a prince is inferior to a duke as a
      member of a particular order of nobility; in Spain he is
      always one of the royal family.
      [1913 Webster]

   4. The chief of any body of men; one at the head of a class
      or profession; one who is pre["e]minent; as, a merchant
      prince; a prince of players. "The prince of learning."
      --Peacham.
      [1913 Webster]

   Prince-Albert coat, a long double-breasted frock coat for
      men.

   Prince of the blood, Prince consort, Prince of
   darkness. See under Blood, Consort, and Darkness.

   Prince of Wales, the oldest son of the English sovereign.


   Prince's feather (Bot.), a name given to two annual herbs
      (Amarantus caudatus and Polygonum orientale), with
      apetalous reddish flowers arranged in long recurved
      panicled spikes.

   Prince's metal, Prince Rupert's metal. See under Metal.

   Prince's pine. (Bot.) See Pipsissewa.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Prince \Prince\, v. i.
   To play the prince. [R.] --Shak.
   [1913 Webster]

WordNet (r) 3.0 (2006):

prince
    n 1: a male member of a royal family other than the sovereign
         (especially the son of a sovereign)

Moby Thesaurus II by Grady Ward, 1.0:

70 Moby Thesaurus words for "prince":
   Muslim rulers, Prinz, acceptable person, anointed king, atheling,
   baron, capital fellow, chief, chieftain, crown prince,
   crowned head, czar, diamond, dynast, emir, emperor, gem, gentleman,
   good fellow, good lot, good man, good person, good sort,
   good woman, grand duke, heir apparent, heir presumptive,
   high chief, honest man, imperator, jewel, khan, king, king-emperor,
   kinglet, knez, lady, lord paramount, majesty, mensch, merchant,
   mirza, monarch, overlord, paramount, pearl, perfect gentleman,
   perfect lady, persona grata, petty king, potentate, prince consort,
   prince regent, princeling, princes of India, real man, right sort,
   rough diamond, royal, royal personage, royalty, ruler, shahzada,
   sheikh, sherif, sovereign, suzerain, tetrarch, tycoon, worthy



Easton's 1897 Bible Dictionary:

Prince
   the title generally applied to the chief men of the state. The
   "princes of the provinces" (1 Kings 20:14) were the governors or
   lord-lieutenants of the provinces. So also the "princes"
   mentioned in Dan. 6:1, 3, 4, 6, 7 were the officers who
   administered the affairs of the provinces; the "satraps" (as
   rendered in R.V.). These are also called "lieutenants" (Esther
   3:12; 8:9; R.V., "satraps"). The promised Saviour is called by
   Daniel (9:25) "Messiah the Prince" (Heb. nagid); compare Acts
   3:15; 5:31. The angel Micheal is called (Dan. 12:1) a "prince"
   (Heb. sar, whence "Sarah," the "princes").


Bouvier's Law Dictionary, Revised 6th Ed (1856):

PRINCE. In a general sense, a sovereign the ruler of a nation or state. The
son of a king or emperor, or the issue of a royal family; as, princes of the
blood. The chief of any body of men.
     2. By a clause inserted in policies of insurance, the insurer is liable
for all losses occasioned by "arrest or detainment of all kings, princes,
and people, of what nation, condition, or quality soever." 1 Bouv. Inst. n.
1218.