n. A circle.n. Specifically—2. The circle of the earth.n. A passing round or in a circle; a circular course; a circuit; round; circumference.n. Range or extent within limits; hence, limit or boundary; limits.n. In music, the total range or number of tones which a given voice or instrument is capable of producing.n. Contrivance; scheme; plotting; plan.n. An instrument used to indicate the magnetic meridian, or the direction of objects with reference to that meridian.n. A mathematical instrument for describing circles, or for measuring figures, distances between two points, etc.: commonly in the plural.n. In zoology, the radius of the dentary apparatus of a sea-urchin. See radius, and cut under lantern.n. In archery, elevation of the arrow in shooting.n. To keep within bounds.To stretch round; extend about so as to embrace; inclose; encircle; environ; surround.To go about or round; make the circuit of.To obtain; attain to; procure; gain; bring within one's power; accomplish.To purpose; intend; imagine; plot; contrive.To canvass; reflect upon; ponder.To bend in the form of a circle or curve; make circular or curved: as, to compass timber for a ship.Synonyms To achieve, bring about, effect, secure.In a compass or curve; in archery, at an elevation.To the limit.n. [capitalized] In astronomy, a small southern constellation.To grasp mentally; comprehend.To adjust or orient by means of a compass.To level a compass.