Entry 1 sense Webster, 1913 Excommune · Ex·com·mune · IPA /ˌɛkskəˈmjuːn/ 01 v. t. To exclude from participation in; to excommunicate. 1. To exclude from participation in; to excommunicate.[Obs.] “Poets . . . were excommuned Plato's common wealth” — Gayton.