JACKASS n.
A conceited dolt; a perverse blockhead. Jackass bark (Naut.), a three-masted vessel, with only the foremast square-rigged; a barkentine. -- Jackass deer (Zoöl.), the koba. -- Jackass hare, Jackass rabbit (Zoöl.). See Jack rabbit, under 2d Jack, n. -- Jackass penguin (Zoöl.), any species of penguin of the genus Sphen…
JET n.
ken from it when the type is cold. Knight. Jet propeller (Naut.), a device for propelling vessels by means of a forcible jet of water ejected from the vessel, as by a centrifugal pump. -- Jet pump, a device in which a small jet of steam, air, water, or other fluid, in rapid motion, lifts or otherwise moves, by its imp…
JUNK n.
A large vessel, without keel or prominent stem, and with huge masts in one piece, used by the Chinese, Japanese, Siamese, Malays, etc., in navigating their waters.
KEEL n. 2 definitions
or series of timbers scarfed together, extending from stem to stern along the bottom of a vessel. It is the principal timber of the vessel, and, by means of the ribs attached on each side, supports the vessel's frame. In an iron vessel, a combination of plates supplies the place of the keel of a wooden ship. See Illust…