资料来源 : Webster's Revised Unabridged Dictionary (1913)

Thirster \Thirst"er\, n.
   One who thirsts.

资料来源 : WordNet®

thirster
     n : a person with a strong desire for something; "a longer for
         money"; "a thirster after blood"; "a yearner for
         knowledge" [syn: {longer}, {yearner}]