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centreboard

British  
/ ˈsɛntəˌbɔːd /

noun

  1. a supplementary keel for a sailing vessel, which may be adjusted by raising and lowering Compare daggerboard

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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Mahogany over a steel frame, with keel, stem, and sternpost of wood, a dagger-plate centreboard streamlined and built of teak, plated with bronze.

From Time Magazine Archive

First they rip off each other's ruby-red ventral fins which look like a sailboat's centreboard.

From Time Magazine Archive

Frank, still curled up beside the centreboard case, gazed under the sail at Inishark.

From Priscilla's Spies by George A. Birmingham

His black eyes were flashing eagerly, and his face was flushed with suppressed excitement, as he dropped the centreboard, sprang forward with a single leap, and put up the sail.

From Tales of the Fish Patrol by George Varian

J. G. Ross, Mariner’s Harbor, Staten Island, N.Y., a 12-foot round-bottomed row-boat with centreboard and oars, for a photographic outfit, a bicycle or a press.

From Golden Days for Boys and Girls Volume VIII, No 25: May 21, 1887 by James Elverson

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