Search the Dictionary

at night, as a signal, or for the use of a watch or guard. -- Watch glass. (a) A concavo-convex glass for covering the face, or dial, of a watch; -- also called watch crystal. (b) (Naut.) A half- hour glass used to measure the time of a watch on deck.(Chem.) A round concavo-convex glass of shallow depth used for certa…

careous tube which incases the entire animal. The tube is closed at the anterior end by a convex disk perforated by numerous pores, or tubules, and resembling the rose of a watering pot. -- Watering trough, a trough from which cattle, horses, and other animals drink.

A form of vessel, often with steam power, having sharp ends and a very convex upper deck, much used on the Great Lakes, esp. for carrying grain.

A magnifying glass consisting of two plano-convex lenses. It is designed to correct spherical aberration and chromatic dispersion.

A small three-masted vessel, with projecting bow stern and convex decks, used in the Mediterranean for transporting merchandise, etc. It carries large square sails, or both. Xebecs were formerly armed and used by corsairs.

A frame or convex piece by which a bell is hung for ringing it. See Illust. of Bell.