IPA: /ˈtrɔːləmən/
KK: /ˈtrɔːləmən/
A person who works on a fishing boat that uses a large net to catch fish.
The trawlerman returned with a full catch after a long day at sea.
Trawlerman is formed from "trawl" (from Middle Dutch *trawlen*, meaning to drag or pull) and "-man" (meaning a person who). A trawlerman is a person who drags or pulls nets in the sea for fishing.
Think of someone who 'pulls' ('trawl') nets in the sea — that's why a trawlerman is a person who does this.
No commonly confused words.