IPA: /ˈskruːˌdraɪ.vər/
KK: /ˈskruːˌdraɪvər/
A tool that is used to turn screws, usually having a handle and a metal shaft with a flat or pointed end.
He used a screwdriver to fix the loose cabinet door.
Screwdriver → The word is formed from "screw" (from Old French *escroue*, meaning a metal fastener with a helical thread) and "driver" (from Old English *drifan*, meaning to drive or push). A screwdriver is a tool used to drive screws into materials.
Think of a tool that 'drives' ('drifan') a 'screw' ('escroue') into place — that's what a screwdriver does.