rill

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rill / ril/ • n. a small stream. ∎  a shallow channel cut in the ground by running water. ∎ variant spelling of rille.• v. [intr.] (of water) flow in or as in a rill: the springwater rilled over our cold hands. ∎  [as adj.] (rilled) indented with small grooves: blocks of butter pounded into artful shapes with rilled paddles.