n. A portable device to allow divers to breathe while under water, consisting of one or two tanks of compressed air which are strapped onto the back of the diver, and are connected by tubing to a mouthpiece through which the diver receives the air from the tanks at rate adjustable by a valve; -- called also
See under 1st Back. [ 1913 Webster ]
An officer of the customs, whose duty it is to search vessels. [ Eng. ] [ 1913 Webster ]
(Naut.) Water confined in specially constructed compartments in a vessel's hold, to serve as ballast. [ 1913 Webster ]
(Physics) A barometer in which the changes of atmospheric pressure are indicated by the motion of a column of water instead of mercury. It requires a column of water about thirty-three feet in height. [ 1913 Webster ]
A device for regulating the temperature of anything subjected to heat, by surrounding the vessel containing it with another vessel containing water which can be kept at a desired temperature; also, a vessel designed for this purpose. [ 1913 Webster ]
(Zool.) Any species of Tardigrada, 2. See Illust. of Tardigrada. [ 1913 Webster ]
A kind of mattress made of, or covered with, waterproof fabric and filled with water, thus providing uniform support to the body lying on it; -- also a bed constructed so as to contain such a mattress. It is used in hospitals for bedridden patients, as well as in some private homes. [ 1913 Webster +PJC ]
(Bot.) The American hornbeam. See Hornbeam. [ 1913 Webster ]
(Zool.) Any one of numerous species of aquatic beetles belonging to
Same as Tromp. [ 1913 Webster ]
(Zool.) Any aquatic bird; a water fowl. [ 1913 Webster ]
(Zool.) The European water ousel, or dipper. [ 1913 Webster ]
(Zool.) A boat bug. [ 1913 Webster ]
A disease of sheep; gid. [ 1913 Webster ]
(Med.) See under Brash. [ 1913 Webster ]
(Zool.) Any arthropod that breathes by means of gills. [ 1913 Webster ]
(Steam Boilers) See Water table. [ 1913 Webster ]
(Zool.) A large, heavy antelope (Kobus ellipsiprymnus) native of Central Africa. It frequents the banks of rivers and is a good swimmer. It has a white ring around the rump. Called also
☞ The name is also applied to other related species, as the leche (Kobus leche), which has similar habits. [ 1913 Webster ]
(Zool.) The European buffalo. [ 1913 Webster ]
(Zool.)
A large, open-headed cask, set up on end, to contain water. Dickens. [ 1913 Webster ]