Lewis & Short

irrādo (inr-), 3, v. a. [1. in-rado].

  1. I. To scrape into: eodem silphium irradito, Cato, R. R. 157, 7; cf. § 8.
  2. II. To scrape, shave, make smooth: caput irrasum, shaved, bald, Plaut. Rud. 5, 2, 16.