The Collaborative International Dictionary
Permiss
Permiss \Per*miss"\, n. [See Permit.]
A permitted choice; a rhetorical figure in which a thing is
committed to the decision of one's opponent. [Obs.]
--Milton.
Wiktionary
permiss
n. 1 A choice which has been permitted. 2 A rhetorical device in which a thing is predicated on the decision of one's opponent.