The Collaborative International Dictionary
Excommune
Excommune \Ex`com*mune"\v. t. [Cf. F. excommuier. See Excommunicate.] To exclude from participation in; to excommunicate. [Obs.]
Poets . . . were excommuned Plato's common wealth
--Gayton.
Wiktionary
excommune
vb. (context obsolete English) To exclude from participation in; to excommunicate.