NOUN (3)

1. that part of the earnings of a corporation that is distributed to its shareholders; usually paid quarterly;

2. a number to be divided by another number;

3. a bonus; something extra (especially a share of a surplus);

The Collaborative International Dictionary of English v.0.48:

Dividend \Div"i*dend\, n. [L. dividendum thing to be divided,
   neut. of the gerundive of dividere: cf. F. dividende.]
   1. A sum of money to be divided and distributed; the share of
      a sum divided that falls to each individual; a distribute
      sum, share, or percentage; -- applied to the profits as
      appropriated among shareholders, and to assets as
      apportioned among creditors; as, the dividend of a bank, a
      railway corporation, or a bankrupt estate.
      [1913 Webster]

   2. (Math.) A number or quantity which is to be divided.
      [1913 Webster]

WordNet (r) 3.0 (2006):

dividend
    n 1: that part of the earnings of a corporation that is
         distributed to its shareholders; usually paid quarterly
    2: a number to be divided by another number
    3: a bonus; something extra (especially a share of a surplus)

Moby Thesaurus II by Grady Ward, 1.0:

144 Moby Thesaurus words for "dividend":
   accrued dividends, accumulated dividends, allotment, allowance,
   avails, balance, big end, bigger half, bit, bite, bonus,
   box office, budget, capital gains, carrot, cash dividend, chunk,
   cleanup, clear profit, commission, commissions, contingent, credit,
   credits, cumulative dividend, cut, deal, destiny,
   disposable income, dividends, dole, earned income, earnings, end,
   equal share, extra, extra dividend, fate, filthy lucre, gain,
   gains, gate, gate receipts, get, gettings, gleanings, gratuity,
   gross, gross income, gross profit, gross receipts, guerdon, half,
   halver, helping, hoard, income, intake, interest, interim dividend,
   killing, lagniappe, leftover, lot, lucre, make, makings, margin,
   measure, meed, melon, mess, modicum, moiety, neat profit, net,
   net income, net profit, net receipts, optional dividend, output,
   overage, overmeasure, overplus, overrun, overset, overstock,
   oversupply, paper profits, part, pelf, percentage, perk, perks,
   perquisite, phony dividend, pickings, piece, plum, plus, portion,
   pourboire, premium, prize, proceeds, produce, profit, profits,
   proportion, quantum, quota, rake-off, ration, receipt, receipts,
   receivables, regular dividend, remainder, return, returns, revenue,
   royalties, royalty, segment, share, slice, small share,
   something extra, spare, special dividend, stake, stock,
   stock dividend, store, surplus, surplusage, take, take-in, takings,
   tip, unearned income, wealth, winnings, yield



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

DIVIDEND. A portion of the principal, or profits, divided among several
owners of a thing.
     2. The term is usually applied to the division of the profits arising
out of bank or other stocks; or to the division, among the creditors, of the
elects of an insolvent estate.
     3. In another sense, according to some old authorities, it signifies
one part of an indenture. T. L.