'Buck' in the Bible

if his sin, wherein he hath sinned, come to his knowledge, he shall bring his offering, a buck of the goats, a male without blemish.

and to the children of Israel shalt thou speak, saying, Take a buck of the goats for a sin-offering, and a calf and a lamb, yearlings, without blemish, for a burnt-offering;

And ye shall sacrifice one buck of the goats for a sin-offering, and two he-lambs, yearlings, for a sacrifice of peace-offering.