To plunge into, under, or within anything, especially a fluid; to dip; to immerse.
To disappear by entering into any medium, as a star into the light of the sun.
to collapse, to fall
To turn up the keel; to show the bottom.
To traverse with a keel; to navigate.
To mark with ruddle.
A broad, flat vessel used for cooling liquids; a brewer's cooling vat; a keelfat.
In a dirigible, a construction similar in form and use to a ship's keel; in an aeroplane, a fin or fixed surface employed to increase stability and to hold the machine to its course.
A large beam along the underside of a ship’s hull from bow to stern.
The two lowest petals of the corolla of a papilionaceous flower, united and enclosing the stamens and pistil; a carina.
A rigid, flat piece of material anchored to the lowest part of the hull of a ship to give it greater control and stability.
Red chalk; ruddle.
The rigid bottom part of something else, especially an iceberg.
A type of flat-bottomed boat.
The periphery of a whorl extended to form a more or less flattened plate; a prominent spiral ridge.