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. &unr_;. ] To remove or extirpate the ovaries of, as a sow or a bitch; to castrate (a female animal). [ 1913 Webster ]