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A Linnæan class of plants including all that have any number of stamens between twelve and nineteen.

A period of from four to six weeks, in the summer, variously placed by almanac makers between the early part of July and the early part of September; canicular days; -- so called in reference to the rising in ancient times of the Dog Star (Sirius) with the sun. Popularly, the sultry, close part of the summer.…

In pile driving, a block interposed between the head of the pile and the ram of the driver.

A small constellation between Aquila and Pegasus. See Delphinus, n.,

that liveth forever, whose dominion is an everlasting dominion. Dan. iv. 34. To choose between dominion or slavery. Jowett (Thucyd. ).

f old age; senility; as, a venerable man, now in his dotage. Capable of distinguishing between the infancy and the dotage of Greek literature. Macaulay.

-quick. -- Double window, a window having two sets of glazed sashes with an air space between them.

s instead of one; -- said of a screw in which the pitch is equal to twice the distance between the centers of adjacent threads.

issue or event. We . . . have sustained one day in doubtful fight. Milton. The strife between the two principles had been long, fierce, and doubtful. Macaulay.

d), 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 series of dovetails. -- Dovetail saw (Carp.), a saw used in…

Of a color between gray and brown. -- n.

The difference between the speed of a screw steamer under sail and that of the screw when the ship outruns the screw; or between the propulsive effects of the different floats of a paddle wheel. See Citation under Drag, v. i., 3. Drag sail (Naut.), a sail or canvas rigged on a stout frame, to be dragged by a vessel thr…

ar is drawn. It is usually provided with a spring to give elasticity to the connection between the cars of a train.

A passage driven or cut between shaft and shaft; a driftway; a small subterranean gallery; an adit or tunnel.

A combat between two persons, fought with deadly weapons, by agreement. It usually arises from an injury done or an affront given by one to the other. Trial by duel (Old Law), a combat between two persons for proving a cause; trial by battel.

An elderly lady holding a station between a governess and companion, and appointed to have charge over the younger ladies in a Spanish or a Portuguese family. Brande & C.

- formerly that of a human mother, now that of a cow or other beast. With mother's dug between its lips. Shak.

The part of the small intestines between the stomach and the jejunum. See Illust. of Digestive apparatus, under Digestive.

Imperfect obscurity; a middle degree between light and darkness; twilight; as, the dusk of the evening.

A piece of wood set between two studs, posts, etc., to stiffen and support them.