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The fourth joint of the leg of an insect. See Illust. under Coleoptera, and under Hexapoda.

h have trifoliate leaves, and joined pods roughened with minute hooked hairs by which the joints adhere to clothing and to the fleece of sheep.

Two rods or plates connected by a toggle joint. Toggle iron, a harpoon with a pivoted crosspiece in a mortise near the point to prevent it from being drawn out when a whale, shark, or other animal, is harpooned. -- Toggle joint, an elbow or knee joint, consisting of two bars so connected that they may be brought quite…

An instrument, usually of metal, consisting of two parts, or long shafts, jointed together at or near one end, or united by an elastic bow, used for handling things, especially hot coals or metals; -- often called a pair of tongs.

One of the mineral concretions about the joints, and in other situations, occurring chiefly in gouty persons. They consist usually of urate of sodium; when occurring in the internal organs they are also composed of phosphate of calcium.

emor of a person who is weak, infirm, or old. He fell into an universal tremor of all his joints. Harvey.

Having three joints.

At Athens, one who (singly, or jointly with other citizens) had to fit out a trireme for the public service.

A division of Coleoptera including those which have but three joints in the tarsi.

A three-legged frame or stand, usually jointed at top, for supporting a theodolite, compass, telescope, camera, or other instrument. Tripod of life, or Vital tripod (Physiol.), the three organs, the heart, lungs, and brain; -- so called because their united action is necessary to the maintenance of life.…

The third joint of the leg of an insect, or the second when the trochantine is united with the coxa.

The second joint of the leg of an insect, -- often united with the coxa.

A wheel-like joint of the stem of a fossil crinoid.

Admitting of rotation on an axis; -- sometimes applied to a pivot joint like that between the atlas and axis in the vertebral column.

The finishing of joints along the center lines with a narrow ridge of putty or fine lime mortar.

Having each joint buried in the preceding funnel-shaped one, as in certain antennæ of insects.

A joint or other connection uniting parts of machinery, or the like, as the elastic pipe of a tender connecting it with the feed pipe of a locomotive engine; especially, a pipe fitting for connecting pipes, or pipes and fittings, in such a way as to facilitate disconnection.

United; joint; as, unite consent. [Obs.] J. Webster.

The peculiar characteristics of an estate held by several in joint tenancy.

ch. See the Note under Catholic, a., 1. -- Universal coupling. (Mach.) Same as Universal joint, below. -- Universal dial, a dial by which the hour may be found in any part of the world, or under any elevation of the pole. -- Universal instrument (Astron.), a species of altitude and azimuth instrument, the peculiarit…