Standard Lemma guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
noun
A long, narrow depression that resembles a channel, found on the surface of various lunar and planetary bodies.
Definition source: English Wiktionary via Wiktextract
Topics: astronomy, natural-sciences, planetology
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
Borrowed from German Rille (“channel”).
