trench

Boyd’s Bible Dictionary:

(cut). In military usage, a ditch for protection, but in 1 Samuel 26:5, the place where the wagons were grouped or packed.

Strong’s Dictionary of Greek Words:

Greek:
χάραξ
Transliteration:
charax
Phonic:
khar’-ax
Meaning:
from χαράσσω (to sharpen to a point; akin to 1125 through the idea of scratching); a stake, i.e. (by implication) a palisade or rampart (military mound for circumvallation in a siege)
KJV Usage:
trench