silvesco — Lewis & Short
silvesco (sylv-), ĕre,
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.