MEANING: noun:
1. A small stream.
2. A narrow groove carved by erosion.

ETYMOLOGY - From Dutch ril or Low German Rille (groove). Ultimately from the Indo-European root rei- (to flow or run), which also gave us run, rival, derive, and runnel. Earliest documented use: 1552.

MRILL - mascot of a campaign among young children to promote health - inspired by "MR ICK" for poison awareness

R G-I'LL - a phonetic sock pattern

RI ML - Rhode Island becomes the first state to adopt metric units (see also RI LB)