Blockade

1. The shutting up of a place by troops or ships, with the purpose of preventing ingress or egress, or the reception of supplies; as, the blockade of the ports of an enemy.
2. An obstruction to passage.
3. interference with transmission of a physiological signal, or a physiological reaction. (physiology)

imp. & p. p. Blockaded; p. pr. & vb. n. Blockading

1. To shut up, as a town or fortress, by investing it with troops or vessels or war for the purpose of preventing ingress or egress, or the introduction of supplies. See note under Blockade, n.
2. Hence, to shut in so as to prevent egress.

   Till storm and driving ice blockade him there.

3. To obstruct entrance to or egress from.

   Huge bales of British cloth blockade the door.