IPA: /ˈstiːlˌwɜːrkər/
KK: /ˈstilˌwɜrkər/
A person who works with steel, especially in making or shaping it for construction or manufacturing.
The steelworker skillfully shaped the metal beams for the new building.
Steelworker → It is formed from "steel" (from Old English *stæle*, meaning a hard, strong metal) and "worker" (from Old English *wyrcan*, meaning to work or labor). A steelworker is someone who works with steel, shaping and fabricating it into various forms.
Think of someone who 'works' ('wyrcan') with 'steel' ('stæle') — that's why a steelworker is a person who shapes and fabricates steel.