permiss

Noun

 * 1) A choice that has been permitted.
 * 2) A rhetorical device in which a thing is predicated on the decision of one's opponent.

Verb

 * 1)  To grant permission to; permit
 * 2) * 1977, Biochemistry and Experimental Biology - Volumes 13-14:
 * The catheter was connected through a forked tube either with electromanometer (or a mercury manometer), or with a pressurized reservoir system through a cock permissing to switch arbitrarily one or the other.