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centerboard

American  
[sen-ter-bawrd, -bohrd] / ˈsɛn tərˌbɔrd, -ˌboʊrd /

noun

Nautical.

  1. a pivoted fin keel that can be swung upward and aft within a watertight trunk when not in use.

Etymology

Origin of centerboard

An Americanism dating back to 1840–50; center + board

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

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