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