a. [f. THORN sb. + -LESS.] Having no thorns; free from thorns; without a thorn.

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1776.  Withering, Brit. Plants (1796), II. 461. [Mespilus germanica] Thornless: leaves spear-shaped, cottony underneath: flowers solitary, sitting.

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1803.  Visct. Strangford, Poems of Camoens, To Night (1810), 66. I … Have never yet been one of those Whose love has prov’d a thornless rose!

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1825.  H. Alford, in Life, 17. Perennial and thornless flowers bloom only in the Paradise above.

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  Hence Thornlessness.

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1857.  Livingstone, Trav., xviii. 345. The thornlessness of the vegetation is especially noticeable.

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1888.  N. Y. Times., 12 Feb., 12/5. A certain Polish Countess, wishing to symbolize the humility and thornlessness of her affection, always received him in a boudoir thickly carpeted with rose leaves.

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