Gratuity
Pronunciation : Gra*tu"i*ty
Part of Speech : n.;
Etymology : [F. gratuit?, or LL. gratuitas.]
Definition : 1. Something given freely or without recompense; a free gift; a present. Swift.
2. Something voluntarily given in return for a favor or service, as a recompense or acknowledgment.
pl. Gtratuities.
Source : Webster's Unabridged Dictionary, 1913