ʾārav אָרַב ‘to ambush’ (Hebrew)

Etymology^?: a primitive root

ʾārav v
1) to lie in wait, ambush, lurk
 1a) (Qal)
  1a1) to lie in wait
  1a2) ambush (participle as subst)
 1b) (Piel) ambushers, liers-in-wait (pl. participle)
 1c) (Hiphil) to lay an ambush