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aided ornament worn as part of a military uniform. -- Shoulder-of-mutton sail (Naut.), a triangular sail carried on a boat's mast; -- so called from its shape. -- Shoulder slip, dislocation of the shoulder, or of the humerous. Swift. -- Shoulder strap, a strap worn on or over the shoulder. Specifically (Mil. & Naval…

Gwilt. -- Span shackle (Naut.), a large bolt driven through the forecastle deck, with a triangular shackle in the head to receive the heel of the old-fashioned fish davit. Ham. Nav. Encyc.

The irregular triangular space between the curve of an arch and the inclosing right angle; or the space between the outer moldings of two contiguous arches and a horizontal line above them, or another arch above and inclosing them.

-- Spider crab (Zoöl.), any one of numerous species of maioid crabs having a more or less triangular body and ten long legs. Some of the species grow to great size, as the great Japanese spider crab (Macrocheira Kempferi), measuring sometimes more than fifteen feet across the legs when they are extended. -- Spider fly…

A large triangular sail set upon a boom, -- used when running before the wind.

One of the triangular platforms in front of, and abaft, the paddle boxes of a steamboat.

trawberry pear (Bot.), the red ovoid fruit of a West Indian plant of the genus Cereus (C. triangularia). It has a sweetish flavor, and is slightly acid, pleasant, and cooling. Also, the plant bearing the fruit. -- Strawberry sawfly (Zoöl.), a small black sawfly (Emphytus maculatus) whose larva eats the leaves of the s…

A solid in the isometric system, bounded by twenty-four equal triangular faces, four corresponding to each face of the cube.

he family Ciniflonidæ, living among the dead branches of evergreen trees. It constructs a triangular web, or net, usually composed of four radii crossed by a double elastic fiber. The spider holds the thread at the apex of the web and stretches it tight, but lets go and springs the net when an insect comes in contact w…

Having three angles; triangular.

To make triangular, or three-cornered.

alves; as, tricuspid obstruction. Tricuspid valve (Anat.), the valve, consisting of three triangular membranous flaps, at the opening of the right auricle into the right ventricle in the heart of most mammals; -- sometimes called the tricuspid valves, each flap being regarded as a valve.

A kind of triangular lyre or harp.

Having three angles, or corners; triangular; as, a trigonal stem, one having tree prominent longitudinal angles.

A smooth triangular area on the inner surface of the bladder, limited by the apertures of the ureters and urethra.

A stylet, usually with a triangular point, used for exploring tissues or for inserting drainage tubes, as in dropsy. [Written also trochar.]

Things or forms made by a turner, or in the lathe. Chairs of wood, the seats triangular, the backs, arms, and legs loaded with turnery. Walpole.

face of a pediment within the frame made by the upper and lower cornices, being usually a triangular space or table.

d from its appearance in pictures by Vandyke. -- Vandyke edge, an edge having ornamental triangular points.

hall. Vestibule of the ear. (Anat.) See under Ear. -- Vestibule of the vulva (Anat.), a triangular space between the nymphæ, in which the orifice of the urethra is situated. -- Vestibule train (Railroads), a train of passenger cars having the space between the end doors of adjacent cars inclosed, so as to admit of l…