IPA: /ˈwɒtʃˌmeɪkə/
KK: /ˈwɑtʃˌmeɪkər/
A person who creates or fixes watches and clocks.
The watchmaker carefully adjusted the tiny gears inside the antique clock.
Watchmaker → It is formed from "watch" (from Old English *wæccan*, meaning to be awake or to watch) and "maker" (from Old English *macian*, meaning to make or create). A watchmaker is someone who creates or repairs watches, thus relating to the act of watching or keeping time.
Think of someone who 'makes' ('maker') something that helps you 'watch' or keep track of time — that's what a watchmaker does.