Also found in: Thesaurus.
tr.v. frapped, frap·ping, fraps Nautical
1. To make secure by lashing: frap a sail.
2. To take up the slack of; tighten.
[Middle English frapen, to strike, from Old French fraper; see frappé.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.