Long, narrow ditch (6)
I believe the answer is:
trench
(Other definitions for trench that I've seen before include "A deep ditch, as dug for troops" , "A ditch dug by soldiers" , "Deeply cut" , "at the front" , "Drain" .)
I believe the answer is:
trench
(Other definitions for trench that I've seen before include "A deep ditch, as dug for troops" , "A ditch dug by soldiers" , "Deeply cut" , "at the front" , "Drain" .)