Search the Dictionary

Consisting of, or having, three valves; opening with three valves; as, a three-valved pericarp.

-- Tide dial, a dial to exhibit the state of the tides at any time. -- Tide gate. (a) An opening through which water may flow freely when the tide sets in one direction, but which closes automatically and prevents the water from flowing in the other direction. (b) (Naut.) A place where the tide runs with great velocit…

The operation of making an opening into the windpipe.

The prominence in front of the external opening of the ear. See Illust. under Ear.

d a window above it. Transom is the horizontal, as mullion is the vertical, bar across an opening. See Illust. of Mullion.

A lifting or sliding door covering an opening in a roof or floor.

cover and enfilade the covered way. -- Trench plow, or Trench plough, a kind of plow for opening land to a greater depth than that of common furrows.

icuspid 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.

The lighter woodwork in the interior of a building; especially, that used around openings, generally in the form of a molded architrave, to protect the plastering at those points. In ballast trim (Naut.), having only ballast on board. R. H. Dana, Jr. -- Trim of the masts (Naut.), their position in regard to the ship a…

Made in the form of a small tube; provided with a tube, or elongated opening. Tubulated bottle or retort (Chem.), a bottle or retort having a stoppered opening for the introduction or removal of materials.

A short tubular opening at the top of a retort, or at the top or side of a bottle; a tubulation.

ually covered with a firm external tunic, consisting in part of cellulose, and having two openings, one for the entrance and one for the exit of water. The pharynx is usually dilated in the form of a sac, pierced by several series of ciliated slits, and serves as a gill.

The opening of a chimney for the passage of smoke; a flue; a funnel. And one great chimney, whose long tunnel thence The smoke forth threw. Spenser.

-- Turn cap, a sort of chimney cap which turns round with the wind so as to present its opening to the leeward. G. Francis. -- Turn of life (Med.), change of life. See under Change. -- Turn screw, a screw driver.

A person who has charge of the keys of a prison, for opening and fastening the doors; a warder.

A closing or opening, or a quick motion, of the eye; a wink or sparkle of the eye. Suddenly, with twinkle of her eye, The damsel broke his misintended dart. Spenser.

The space within an arch, and above a lintel or a subordinate arch, spanning the opening below the arch.

A depression or opening in the center of the base of many spiral shells.

An underground drain or trench with openings through which the water may percolate from the soil or ground above.

he passage of the electrical discharge; a Geissler tube. -- Vacuum valve, a safety valve opening inward to admit air to a vessel in which the pressure is less than that of the atmosphere, in order to prevent collapse. -- Torricellian vacuum. See under Torricellian.