I.v. inch. n. [id.], of the grape-vine, to grow or run wild, to run to wood: “(vitis) ne silvescat sarmentis,” Cic. Sen. 15, 52: “nec pati vitem silvescere,” Col. 4, 11, 2.—
II. Transf.: “capilli silvescentium crinium velleribus involuti,” Arn. 3, p. 109.