What does sur-rādo mean in Latin?

sur-rādo, a verb, means “to scrape below.”.

verb

sur-rādo

sur-rādo (subr-), si, sum, 3, v. a.,

I. to scrape below.

I. Lit. (ante- and postclass.): ficos, Cato, R. R. 50: arborem, Pall. Apr. 4.— *

II. Transf., of a river, to run close under, to flow along or past: barbaros fines, Amm. 28, 2, 1.

What does sur-rādo mean in Latin?: sur-rādo, a verb, means “to scrape below.”.