blockade
block-ade
verb
To seal off a place, preventing goods or people from entering or leaving.
"They decided to blockade the enemy's harbour."
noun
An act of sealing off a place to prevent entry or exit.
"The navy imposed a blockade on the port."
Thesaurus
Synonyms: block off, stymie, hinder, obstruct, stymy, block, embarrass, barricade, stop, block up, bar, seal off