Definition of centerboard in English:

centerboard

Syllabification: cen·ter·board
Pronunciation: /ˈsen(t)ərˌbôrd
 
/

noun

A pivoted board that can be lowered through the keel of a sailboat to reduce sideways movement. Compare with daggerboard.
More example sentences
  • The keel is a centreboard but not weighted; the ballast is in the hull itself (which sounds inefficient but actually works surprisingly well).
  • As a teenager in 1944, I was the skipper of a 10-foot rowboat with a centerboard and small sail.
  • In about 1968, the flat plate centerboard was replaced with an airfoil-shaped centerboard and the mast height was raised slightly, resulting in approximately 20 square feet more sail area.

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Pronunciation: ˌəʊlɪˈadʒɪnəs
adjective
rich in, covered with, or producing oil; oily