Source : Webster's Revised Unabridged Dictionary (1913)

Greeter \Greet"er\, n.
   One who greets or salutes another.

Greeter \Greet"er\, n.
   One who weeps or mourns. [Obs.]

Source : WordNet®

greeter
     n : a person who greets; "the newcomers were met by smiling
         greeters" [syn: {saluter}, {welcomer}]