[1] : The Collaborative International Dictionary of English v.0.48

gratuity \gratu"ity\, 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
see also:
gratuities 

[2] : WordNet (r) 2.0

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

[3] : Moby Thesaurus II by Grady Ward, 1.0

63 moby thesaurus words for "gratuity":
   trinkgeld, balance, bonus, boodle, bounty, bribe, bribe money,
   complimentariness, consideration, costlessness, dividend, donative,
   double time, expenselessness, extra, fee, free ride, freebie,
   freeness, gift, gratification, gratuitousness, gravy, grease,
   honorarium, hush money, incentive pay, inducement, labor of love,
   lagniappe, largess, leftover, liberality, margin, no charge,
   overage, overmeasure, overplus, overrun, overset, overstock,
   oversupply, palm, palm oil, payoff, payola, perks, perquisite,
   plus, pourboire, premium, protection, remainder, reward, salve,
   something extra, sop, spare, sportula, surplus, surplusage,
   sweetener, tip

Gratuity >> G Words
Gratuity, definition of term: Gratuity
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