From Longman Dictionary of Contemporary Englishgullygul‧ly, gulley /ˈɡʌli/ noun (plural gullies) [countable] 1 DNa small narrow valley, usually formed by a lot of rain flowing down the side of a hill2 DNa deep ditch
Examples from the Corpus
gully• The phalanx of ladies drew me away from there and up a gully.• After one more headland we joined the official high level route to go round the edge of a deep gully.• Enemy aircraft swarmed overhead, methodically searching each gully and outcrop.• Hartland took a fine gully catch to dismiss Russell.• It was noted that it bounced only once before exploding in the gully below!• Yet the moment they skidded into the gully they were trapped.Origin gully (1600-1700) gully “throat” ((1500-1600)), probably from gullet 