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 rēgula. Cognate with English rail and rule. Doublet of rail (from English), règle (a semi-learned borrowing), reille (from Old French), and rigole (via Middle Dutch).

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