n.
Pronunciation: ' ril
Variant: or rille \ ' ril, ' ri-l ə \
Function: noun
Etymology: German Rille, literally, channel made by a small stream, from Low German, rill
Date: 1868
: any of several long narrow valleys on the moon's surface
n.
Pronunciation: ' ril
Variant: or rille \ ' ril, ' ri-l ə \
Function: noun
Etymology: German Rille, literally, channel made by a small stream, from Low German, rill
Date: 1868
: any of several long narrow valleys on the moon's surface
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012