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keel

/keel/US // kil //UK // (kiːl) //

龙骨,脊柱,脊柱骨

Related Words

Definitions

n.名词 noun
  1. 1
    • : Nautical. a central fore-and-aft structural member in the bottom of a hull, extending from the stem to the sternpost and having the floors or frames attached to it, usually at right angles: sometimes projecting from the bottom of the hull to provide stability.
    • : Literary. a ship or boat.
    • : a part corresponding to a ship's keel in some other structure, as in a dirigible balloon.
    • : Keel, Astronomy. the constellation Carina.
    • : Botany, Zoology. a longitudinal ridge, as on a leaf or bone; a carina.
    • : Also called brace molding. Architecture. a projecting molding the profile of which consists of two ogees symmetrically disposed about an arris or fillet.
  1. 1
    • : to turn or upset so as to bring the wrong side or part uppermost.
  1. 1
    • : keel over, to capsize or overturn.to fall as in a faint: Several cadets keeled over from the heat during the parade.

Phrases

  • keel over
  • on an even keel

Synonyms & Antonyms

Examples

  • Melfi is the even keel to Tony’s volatility — a thoughtful, occasionally horrified audience surrogate.

  • They sense that their ship of state is no longer on an even keel.

  • But, as the keel of the boats touched bottom, each boat-load dashed into the water and then into the enemy's fire.

  • Robert was out there under the shed, reclining in the shade against the sloping keel of the overturned boat.

  • To maintain the vessel on an even keel he introduced four vanes, called “hydroplanes,” for regulating the depth of descent.

  • The tip often forms an abrupt angle with the shaft and there is a keel on the dorsal surface of the tip (see figs. 5, 6).

  • Microscopic examination reveals that there is a faint keel on the dorsal surface of the tip.