a.

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  1.  Having, or represented with, two heads.

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  Two-headed snake or worm, the amphisbæna (AMPHISBÆNA 2), formerly supposed to have two heads, one at each end of the body.

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1596.  Spenser, F. Q., V. x. 10. His two-headed dogge that Orthrus hight.

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1596.  Shaks., Merch. V., I. i. 50. By two-headed Ianus.

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1708.  Sewel, II. Tweehoofdig, two-headed.

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1752.  J. Hill, Hist. Anim., 102. The Amphisbæna … has obtained, among the English, the name of the two-headed worm.

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1796.  Morse, Amer. Geog., I. 221. The two-headed snake.

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1867.  Latham, Black & White, 62. A two-headed iron bolt.

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1899.  T. Nicoll, Rec. Archæol. & Bible, vi. 193. The two-headed eagle of the Hittites … survives … as the symbol of imperial power in Austria and Russia to-day.

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  2.  fig. Having or governed by two chiefs or rulers.

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1885.  W. Wilson, Congressional Govt., iv. 220. Doubts as to the advantage of a two-headed legislature.

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1888.  T. W. Higginson, Women & Men, 93. If two business partners can work successfully on the two-headed plan, why [can] not two married persons do it?

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