military blockade mi·li·ta·ryblockade uncommon noun 1. the action of an armed force that surrounds a fortified place and isolates it while continuing to attack Synonymssiegebesiegingbeleagueringmilitary blockade Related words Broader terms blockade Narrower terms AlamoAtlantaBataanDien Bien PhuLucknowOrleansPetersburgPlevna WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.