Lunar trench

The answer

RILL

4 letters. See every clue for this answer on the RILL answer page.

Used 7 times across 4 distinct years; most recently in 2008; first recorded in 1990. It appears in 4 publications in the xd corpus. Frequency and last-seen figures come from the xd crossword corpus only.

Other answers for this clue

The same clue has also been answered these ways in the xd corpus. Answers inside this collection link to their own answer page.

• RILLE (10 uses in xd)

Other clues for RILL

Every other clue in this collection answered by RILL, most used first.

• Small brook - used 101 times, most recently in 2026
• Small stream - used 92 times, most recently in 2026
• Streamlet - used 91 times, most recently in 2025
• Brooklet - used 53 times, most recently in 2018
• Brook - used 42 times, most recently in 2015
• Lunar valley - used 22 times, most recently in 2025
• Moon valley - used 21 times, most recently in 2012
• Rivulet - used 19 times, most recently in 2006
• Tiny stream - used 19 times, most recently in 2022
• Little brook - used 17 times, most recently in 2026
• Stream. - used 12 times, most recently in 2005
• Junior brook - used 7 times, most recently in 2014
• Runnel. - used 7 times, most recently in 1985
• Little stream - used 6 times, most recently in 2023

Related clues

Clues in this collection of the same answer length that share a word with this clue, or match its answer pattern when no word is shared. Most used first.

• Lunar plain - MARE, used 31 times
• Castle trench - MOAT, used 18 times
• Like the Mariana Trench - DEEP, used 17 times
• Protective trench - MOAT, used 16 times
• Lunar effect - TIDE, used 14 times
• Trench around a castle - MOAT, used 14 times

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