RILIEVO
Ri*lie"vo, n.Etym: [It. See Relief.] (Sculp. & Arch.)

Defn: Same as Relief, n.,5.

RILL Rill, n. Etym: [Cf. LG. rille a small channel or brook, a furrow, a chamfer, OE. rigol a small brook, F. rigole a trench or furrow for water, W. rhill a row, rhigol a little ditch. sq. root11.]

1. A very small brook; a streamlet.

2. (Astron.)

Defn: See Rille.

RILL
Rill, v. i.

Defn: To run a small stream. [R.] Prior.

RILLE
Rille, n. Etym: [G. rille a furrow.] (Astron.)

Defn: One of certain narrow, crooked valleys seen, by aid of the telescope, on the surface of the moon.