GNU Collaborative International Dictionary of English

Found 2 definitions

1.       
   Spay , v. t. [imp. & p. p. Spayed ; p. pr. & vb. n. Spaying.] [Cf. Armor. spac'hein, spaza to geld, W. dyspaddu to geld, L. spado a eunuch, Gr. .] To remove or extirpate the ovaries of, as a sow or a bitch; to castrate (a female animal).
   1913 Webster
         
       

2.       
   Spay, n. [Cf. Spade a spay, Spay, v. t.] (Zool.) The male of the red deer in his third year; a spade.
   1913 Webster