Search Result for "gratuity": 
Wordnet 3.0

NOUN (2)

1. a relatively small amount of money given for services rendered (as by a waiter);
[syn: gratuity, tip, pourboire, baksheesh, bakshish, bakshis, backsheesh]

2. an award (as for meritorious service) given without claim or obligation; 



The Collaborative International Dictionary of English v.0.48:

Gratuity \Gra*tu"i*ty\, n.; pl. Gratuities. [F. gratuit['e],
   or LL. gratuitas.]
   1. Something given freely or without recompense; a free gift;
      a present. --Swift.
      [1913 Webster]

   2. Something voluntarily given in return for a favor or
      service, as a recompense or acknowledgment.
      [1913 Webster]


WordNet (r) 3.0 (2006):

gratuity
    n 1: a relatively small amount of money given for services
         rendered (as by a waiter) [syn: gratuity, tip,
         pourboire, baksheesh, bakshish, bakshis,
         backsheesh]
    2: an award (as for meritorious service) given without claim or
       obligation