rille

Borrowed from German Rille (“channel”).

rille (plural rilles)

1. (planetology) A long, narrow depression that resembles a channel, found on the surface of various lunar and planetary bodies.

• rima

• mare
• graben

• iller

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rille

1. (dated or formal) singular present subjunctive of rillen

From Old French reille (“small plank”), from Latin regula. Doublet of règle, a semi-learned borrowing, and cognate with English rail and rule.

rille f (plural rilles)

1. (dialectal) a small piece of pork

• rillette
• rillon

• “rillettes”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

rille

1. inflection of rillar:
   1. first/third-person singular present subjunctive
   2. third-person singular imperative