DOVETAIL n.
A flaring tenon, or tongue (shaped like a bird's tail spread), and a mortise, or socket, into which it fits tightly, making an interlocking joint between two pieces which resists pulling a part in all directions except one. Dovetail molding (Arch.), a molding of any convex section arranged in a sort of zigzag, like a s…
EMERY n.
into convenient. -- Emery cloth or paper, cloth or paper on which the powder of emery is spread and glued for scouring and polishing. -- Emery wheel, a wheel containing emery, or having a surface of emery. In machine shops, it is sometimes called a buff wheel, and by the manufacturers of cutlery, a glazer.…
EPIDEMIC; EPIDEMICAL a. 2 definitions
affecting at the same time, a large number in a community; -- applied to a disease which, spreading widely, attacks many persons at the same time; as, an epidemic disease; an epidemic catarrh, fever, etc. See Endemic.
EXPANDING a.
That expands, or may be expanded; extending; spreading; enlarging. Expanding bit, Expanding drill (Mech.), a bit or drill made adjustable for holes of various sizes; one which can be expanded in diameter while boring. -- Expanding pulley (Mach.), a pulley so made, as in sections, that its diameter can be increased or…