int. Obs. exc. dial. (yocks). A hunting cry; also as vb. (Cf. YOICKS.)

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1778.  Garrick in Monthly Rev. (1779), LX. 59. ’Squire Western, reeling, with October mellow, Tall, yo!—Boys!—Yoax—Criticks! hunt the fellow!

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1828.  Sporting Mag. (N.S.), XXII. 129. He yoaksed in a whisper, he cheered in a whisper.

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1905.  Eng. Dial. Dict., Yocks, a call of encouragement to a dog hunting rabbits, &c. n. Yks.

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