A limestone which contains some clay, and which yields a quicklime that will set, or form a firm, strong mass, underwater.

The control of behavioural and environmental factors in order to ensure effective sleep.

The use of personal care products, such as tampons and wipes, by women during menstruation etc. / (US, dated, 1930s) birth control

A war that comprises the use of conventional and non-conventional means by at least one side, which officially undeclares or denies involvement

A form of mining that uses pressurized water jets to dislodge rock or move sediment.

A form of hydrometer for liquids heavier than water, graduated with an arbitrary scale such that the readings when multiplied by .005 and added to unity give the specific gravity.

Used other than figuratively or idiomatically: see hydraulic, ram.

(organic chemistry, pharmacology) An organic compound with the chemical formula C₂H₃Cl₃O₂, used as a sedative and hypnotic drug and as a laboratory reagent and precursor.

plural of hydraulic organ

Synonym of water organ