- To separate or unfasten; disconnect: detach a check from the checkbook; detach burs from one's coat. (verb-transitive)
- To remove from association or union with something: detach a calf from its mother; detached herself from the group. (verb-transitive)
- To send (troops or ships, for example) on a special mission. (verb-transitive)
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.