Old French for 'to put in the bushes' — from Frankish 'busk' (wood), preserving the image of fighters hidden in trees.
A surprise attack by people lying in wait in a concealed position; to attack by surprise from a hidden position.
From Old French 'embuscher' or 'embûcher' (to place in a wood, to hide in a bush), from 'en-' (in) + 'busche' (wood, bush), from Frankish *busk or Late Latin *boscus (wood, forest). The word preserves the original tactical reality: fighters hiding in the woods. The spelling shifted from 'embush' to 'ambush' in English, likely influenced by the many English words beginning with 'am-' from Latin 'ambi-' (around). Key roots: embuscher (Old French: "to hide in a wood"), *busk (Frankish: "bush, wood").
The word 'ambush' literally means 'to put in the bushes.' The English word 'bush' and the French-derived 'ambush' share the same Germanic root — *busk — so when you ambush someone, you are etymologically hiding in a bush. The variant 'ambuscade,' borrowed from French 'embuscade,' adds a Romance suffix but means exactly the same thing.