A watch kept on some premises, or on a town, by guards during the night. / One or more of the guards on such a watch.

continually looking at the time to see how much longer one has to work or study

A watch, usually electronic, that displays time in the form of numbers, rather than by a dial and hands.

US standard spelling of analogue watch.

A knitted cap, such as the one worn by a seaman when on watch.

A watch that displays time by means of a dial and hands, in contradistinction to a digital watch.

Alternative spelling of watch cap

A watch carried in the pocket, often with a closing cover and usually attached to a chain.

A period of monitoring of someone, especially a prisoner deemed likely to commit suicide, to ensure they do not attempt suicide.

(chemistry) An item of glass laboratory equipment consisting of a simple, slightly concave circle of glass. It is a general utility item, used to hold small samples, to evaporate liquids, to cover a beaker, and so on.