col-lēvo (con-, -laevo), āre, v. a.,
to make entirely smooth , to smooth (post-class. and rare): plagam arboris falce, Plin. 17, 22, 35, § 192: asperitatem oculorum, Sen. Ep. 64, 7; cf.: interanea vesicae, Plin. 23, 1, 18, § 30.