IPA: /ˈtoʊlaɪn/
KK: /ˈtoʊlaɪn/
A rope or cable that is used to pull a boat or vehicle.
The towline was secured to the boat to help it reach the shore safely.
Towline → The word is formed from "tow" (from Old English *tōwian*, meaning to pull or drag) and "line" (from Old English *līn*, meaning a cord or string). A towline is a line or cord used to pull or drag something, typically a boat.
Think of the action of 'pulling' ('tow') something with a 'cord' ('line') — that's what a towline is used for.