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Having three ports; specif.: Designating a type of two-cycle internal-combustion engine in which the mixture enters the crank case through a port uncovered by the piston near the end of its stroke.

Measuring thirty inches by twenty-five; -- said of portraitures. Three-quarter length, a portrait showing the figure to the hips only.

Thrice twenty; sixty.

Having three sides, especially three plane sides; as, a three- sided stem, leaf, petiole, peduncle, scape, or pericarp.

Having a cross section in the form of an equilateral triangle; -- said especially of a kind of file.

Any system of rudders by which the pilot can exert a turning moment about each of the three rectangular axes of an aëroplane or airship.

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

Connected with, or serving to connect, three channels or pipes; as, a three-way cock or valve.

Consisting of three, or thrice repeated; triple; as, threefold justice. A threefold cord is not quickly broken. Eccl. iv. 12.

A small silver coin of three times the value of a penny. [Eng.]

Costing or worth three pence; hence, worth but little; poor; mean.

Lamentation; threnody; a dirge. Shak. The threns . . . of the prophet Jeremiah. Jer. Taylor.

Pertaining to a threne; sorrowful; mournful.

A threne, or threnody; a dirge; a funeral song.

One who composes, delivers, or utters, a threnode, or threnody.

A song of lamentation; a threnode. Sir T. Herbert.

To call; to term. [Obs.] "Luna silver we threpe." Chaucer.

The doctrine of nutrition; a treatise on nutrition.

Same as Thrash. He would thresh, and thereto dike and delve. Chaucer.

Threshold. [Obs.] Chaucer.