Lewis & Short

crassĭtūdo, ĭnis, f. [crassus], thickness, density.

  1. I. Abstr. (in good prose): postes … Quantā firmitate facti et quantā crassitudine, Plaut. Most. 3, 2, 135: parietum, Caes. B. C. 2, 8: libramentum, in quo nulla omnino crassitudo sit, Cic. Ac. 2, 36, 116: columnarum, Vitr. 4, 4, 2: fornicum, Liv. 44, 11, 5 al.: stipites feminis crassitudine, Caes. B. G. 7, 73; cf. id. ib. 3, 13: aëris, Cic. Div. 1, 42, 93: cerae, Plin. 27, 9, 47, § 71: mellis, id. 28, 12, 50, § 187: (ostrea) crassitudine potius spectanda quam latitudine, id. 32, 6, 21, § 60.
  2. II. Concr., a thick matter, dregs, sediment, Cato, R. R. 39, 1; Plin. 25, 11, 90, § 141.