6 entries found for boom.
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Main Entry: 1boom
Pronunciation: büm
Function: noun
Etymology: from Dutch boom "tree, wooden beam" 1: a long pole used especially to stretch the bottom of a sail 2 a: a long beam sticking out from the mast of a derrick to support or guide something that is being lifted b: a long arm used to move a microphone 3: a line of connected floating timbers (as across a river) to obstruct passage or catch floating objects