Dictionary entry

Spay

Webster's Dictionary 1913

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).