IPA: /ˈhɛdweɪ/
KK: /ˈhɛdˌweɪ/
The act of moving forward or making progress, especially towards a goal or destination.
The team made significant headway on the project this week.
Headway is formed from "head" (from Old English "heafod", meaning the top or front part of something) and "way" (from Old English "weg", meaning a path or road). The word "headway" refers to progress made in a forward direction, as if moving ahead on a path.
Think of the 'top' part ('head') of a 'path' ('way') to remember that 'headway' means making progress on a journey.