What is the meaning of Rille?

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

singular present subjunctive of rillen

a small piece of pork

inflection of rillar:

  1. first/third-person singular present subjunctive
  2. third-person singular imperative

first/third-person singular present subjunctive

third-person singular imperative

Source: wiktionary.org