Obs. [a. F. cave hollow, ad. L. cavus.] Hollow, concave. Of the moon: Waning (L. luna cava Plin.). Of a month: Having less than the usual number of days (late L. mensis cavus).

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1540–64.  Raynald, Byrth Mankynde, 61. Stooles … made … caue or holowe in the middes.

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1594.  T. B., La Primaud. Fr. Acad., II. 356. The … great veine called the cave or hollow veine.

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1657.  Tomlinson, Renou’s Disp., 264. Its flowers are albid and cave like a scale.

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1670.  Flamsteed, in Rigaud, Corr. Sci. Men (1841), II. 97. As if the parallax caused the moon to be really cave.

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1677.  R. Cary, Chronol., I. I. vii. 19. If the Month were Cave or Lame of 29 Days only.

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