a. Shaped like a tongue; linguiform.

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1776.  J. Lee, Introd. Bot., Explan. Terms 386. Lingulatum, Tongue-shaped, linear, fleshy.

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1776.  Withering, Brit. Pl. (1796), II. 55. A small tongue-shaped glandular substance.

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1837.  Keith, Bot. Lex., 286. The [Mistletoe] leaves are … tongue-shaped, entire, smooth.

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1898.  Allbutt’s Syst. Med., V. 464. At each systole of the ventricles the tongue-shaped valve-flaps pendent … are moved together towards those orifices.

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