A wild horse.

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1808.  Passed several herds of mustangs or wild horses.—Z. M. Pike, ‘Sources of the Mississippi,’ iii. 273. (N.E.D.)

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1822.  The inhabitants of many places [in Texas] were subsisting on the flesh of mustangs (wild horses), and even that was scarce.—Mass. Spy, Oct. 9.

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1834.  Lewis and Irwin obtained young and unbroken wild horses (or as the hunters call them, mestangs.)—Albert Pike, ‘Sketches,’ &c. p. 74 (Boston).

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1844.  A hardy, sensible mustang, who dated his origin from the plains of Arkansas.—Yale Lit. Mag., ix. 262 (April). (Italics in the original.)

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