IPA: /ˈwɛlˌhɛd/
KK: /ˈwɛlˌhɛd/
The structure or point where water or oil comes out from a well.
The workers installed a new pump at the wellhead to improve water flow.
Wellhead → It is formed from "well" (from Old English *wella*, meaning a spring or source of water) and "head" (from Old English *heafod*, meaning the top or source). The word "wellhead" refers to the source or top of a well, where water emerges.
Think of a 'spring' ('well') being the 'source' ('head') of water — that's why a wellhead is where the water comes from.