Answer: trenched

AnswerCrossword Clue
TRENCHEDDid some digging
TRENCHEDImpinged
trenchedTRENCH, to dig a long, narrow ditch
trenchedBorder closely on; encroach upon
trenchedDig a trench or trenches in (the ground)
trenchedTurn over the earth of (a field or garden) by digging a succession of adjoining ditches