#pourboire__gratuity__tip__bakshish__bakshis__bakshi__backsheesh  a relatively small amount of money given for services rendered (as by a waiter)
  supertype:  fringe_benefit__perquisite__perk  an incidental benefit awarded for certain types of employment (especially if it is regarded as a right); "a limousine is one of the fringe benefits of the job"
  subtype:  Christmas_box  (British) a present given at Christmas for services during the year

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