To beat; to demolish.

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1834.  As sure as you saw the fire at the muzzle of his gun, so sure he knocked the creter’s hind sights out.—Caruthers, ‘The Kentuckian in New-York,’ i. 21 (N.Y.).

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1851.  You’d er thought he’d er knocked the nigh sites off’n every mother’s son of ’em!—‘Polly Peablossom’s Wedding,’ &c., p. 52.

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1853.  It goes agin my grit for Hardscrabble to cave in to Dogtown, when we could knock the hindsights off ’em, if we was only a mind to.—Durivage, ‘Life Scenes,’ p. 43.

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