n. 1. Nautical A triangular headsail set with its luff fastened to a stay rising from the bow, bowsprit, or jib boom. 2. a. The arm of a mechanical crane. b. The boom of a derrick. [Origin unknown.] |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.