BLOCKADE

I. transitive verb (~d; blockading) Date: 1680 to subject to a ~, block , obstruct , ~r noun II. noun Date: 1693 the isolation by a warring nation of an enemy area (as a harbor) by troops or warships to prevent passage of persons or supplies, something that blocks, interruption of normal physiological function (as transmission of nerve impulses) of a cellular receptor, tissue, or organ