Answer:

rill

Answer	Crossword Clue
RILL	Small brook
RILL	Small stream
RILL	Watercourse

RILL	Junior brook
RILL	Brook
RILL	Streamlet
RILL	Little brook
RILL	Brooklet
RILL	Lunar valley
RILL	Lunar trench
RILL	Little stream

RILL	Moon valley
RILL	Little flower?
RILL	Creek
RILL	Little flower
RILL	Mini stream
RILL	Stream
RILL	Lunar lowland
RILL	Tiny stream

RILL	Shallow channel
RILL	Small creek
RILL	Valley on the moon.
RILL	Small stream.
RILL	Streamlet.
RILL	Small brook.
RILL	Brook.
RILL	Runnel.

RILL	Stream.
RILL	Brooklet.
RILL	Kin of a brook.
RILL	Little stream.
RILL	Rivulet.
RILL	Very small brook.
RILL	Babbling brook.
RILL	Stream in miniature.

RILL	Poetic brook.
RILL	Runlet.
RILL	Little brook.
RILL	Modest brook.
RILL	Tiny stream.

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.