vo·rac·i·ty /vɔˈræsəti, və-/
  貪食,貪婪
  Vo·rac·i·ty n.  The quality of being voracious; voraciousness.
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  voracity
       n 1: excessive desire to eat [syn: edacity, esurience, ravenousness,
             voraciousness]
       2: extreme gluttony [syn: edacity, esurience, rapaciousness,
           rapacity, voraciousness]