(n.) An apparatus for raising heavy weights, and especially for stepping and unstepping the lower masts of ships. It consists of two or more spars or pieces of timber, fastened together near the top, steadied by a guy or guys, and furnished with the necessary tackle.

(2):

(n.) An instrument consisting of two blades, commonly with bevel edges, connected by a pivot, and working on both sides of the material to be cut, - used for cutting cloth and other substances.

(3):

(n.) The bedpiece of a machine tool, upon which a table or slide rest is secured; as, the shears of a lathe or planer. See Illust. under Lathe.

(4):

(n.) A similar instrument the blades of which are extensions of a curved spring, - used for shearing sheep or skins.

(5):

(n.) A pair of wings.

(6):

(n.) Anything in the form of shears.

(7):

(n.) A shearing machine; a blade, or a set of blades, working against a resisting edge.

(8):

(n.) A cutting instrument.

Bibliography Information
Webster, Noah. Entry for 'Shears'. Noah Webster's American Dictionary. https://www.studylight.org/dictionaries/eng/web/s/shears.html. 1828.

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Webster's Dictionary

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Shears