obsessio

obsessiō ōnis, f

obsideo, a blocking up, be sieging, blockade : militaris viae: nostrorum, Cs.

obsessio
obsessĭo, ōnis, f. [obsideo], a blocking up, besieging, encompassing, a blockade of a place (class....

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.