From Longman Dictionary of Contemporary Englishcrotchcrotch /krɒtʃ $ krɑːtʃ/ (also crutch British English) noun [countable] HBHthe part of your body between the tops of your legs, or the part of a piece of clothing that covers this → groin
Examples from the Corpus
crotch• Trent came after him, right foot driving at his crotch but hitting his thigh as he rolled again.• The crotch is a notched stick which holds both harpoons.Origin crotch (1500-1600) Probably from crutch 