DOCK n.
which is kept level by pumping water out of, or letting it into, the compartments of side chambers. -- Dry dock, a dock from which the water may be shut or pumped out, especially, one in the form of a chamber having walls and floor, often of masonry and communicating with deep water, but having appliances for excludin…
FAN n.
] Chaucer. Fan blower, a wheel with vanes fixed on a rotating shaft inclosed in a case or chamber, to create a blast of air (fan blast) for forge purposes, or a current for draft and ventilation; a fanner. -- Fan cricket (Zoöl.), a mole cricket. -- Fan light (Arch.), a window over a door; -- so called from the semici…
FILTER n.
her liquid may passed to cleanse it from the solid or impure matter held in suspension; a chamber or device containing such substance; a strainer; also, a similar device for purifying air. Filter bed, a pond, the bottom of which is a filter composed of sand gravel. -- Filter gallery, an underground gallery or tunnel,…