crotch

The area where something forks or branches, a ramification takes place.

The ventral area (very bottom) of the human body between where the legs fork from the torso, in the area of the genitals and anus.

(slang, euphemistic) Either the male or female genitalia.

(billiards) In the three-ball carom game, a small space at each corner of the table.

(typography) The open counter (negative space) formed by two downward strokes that meet at an internal acute angle, potentially above a vertex, as in the letters "V" and "Y".