Found in the following dictionaries
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
OTCWL2014 (NASPA Word List 2014)
"Daggerboard" Definition
noun
A retractable centreboard that slides out to act as a keel.
Source: Wiktionary
A removable narrow centerboard in some small boats that is raised and lowered by sliding up and down.
Source: Merriam-Webster
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