The isolation of a nation, area, city, or harbor by hostile ships or forces in order to prevent the entrance and exit of traffic and commerce.
The forces used to effect this isolation.
To set up a blockade against. See Synonyms at besiege.
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.