crotch [crotches](area of a person’s body) noun [UK: krɒtʃ] [US: ˈkrɑːtʃ]Doctor, I've got an itch in my crotch. = Doctor, tengo picazón en la entrepierna.
groin [groins](anatomical feature) noun [UK: ɡrɔɪn] [US: ˌɡrɔɪn]Mary kicked John in the groin. = Mary pateó a John en la entrepierna.
inseam(The seam of a trouser) noun [UK: ɪnsˈiːm] [US: ɪnsˈiːm]