intercourse UK /ˈɪn.təˌkɔːs/US /ˈɪn.tɚˌkɔɹs/noun 4verb 1forms 3 noun4 •Communication, conversation.this sweet intercourse of looks and smiles — 1667 •Sexual intercourse, especially that involving humans and especially penile-vaginal interconnection.When we situate climax during intercourse as the bullseye, we gate off the idiosyncrasy and experimentation that are the wellspring of sexual pleasure. — 2023 •Dealings between countries. •Dealings with people, including commerce and trade. verb1 •(nonstandard) To have sexual intercourse. formsintercoursed · intercoursing · intercourses