Crotch (kr&obreve_;ch; 224), n.; pl. Crotches (kr&obreve_;ch&ebreve_;z). [Cf. Crotchet, Crutch.] 1. The angle formed by the parting of two legs or branches; a fork; the point where a trunk divides; as, the crotch of a tree. more specifically, the space on the human torso between the two legs; also, the corresponding part between the legs of a pair of pants, which is in contact with the crotch of the wearer; as, pants with a tight crotch have become very popular.
[1913 Webster +PJC]

2. (Naut.) A stanchion or post of wood or iron, with two arms for supporting a boom, spare yards, etc.; -- called also crane and crutch. Totten.
[1913 Webster]

3. (Billiards) In the three-ball carom game, a small space at each corner of the table. See Crotched, below.
[Webster 1913 Suppl.]