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)