[f. TWIN a. or sb. + -SHIP.] The condition of being twin, or a twin; the relation of a twin or twins. lit. and fig.

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1674.  N. Fairfax, Bulk & Selv., 107. It [an atome or leasting] has neither East Side nor West side;… top nor bottom,… nor any thing that speaks twinship to any thing else.

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1796.  Burney, Mem. Metastasio, I. 378. With all the tenderness of twinship.

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1899.  Griffith Jones, Ascent through Christ, II. ii. 28. The two streams of mental and organic life coalesce … and begin that marvellous twinship which ends only at death.

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