gully1
noun /ˈɡʌli/
  /ˈɡʌli/
(also gulley)
 (plural gullies, gulleys)
- a small, narrow channel, usually formed by a stream or by rain
- The slope was still awash with water spilling down deep gullies.
 
 - a deep ditch
 
Word Originmid 16th cent. (in the sense ‘gullet’): from French goulet, diminutive of goule ‘throat’, from Latin gula.