IPA: /ˈlɔːŋʃɔːrmən/
KK: /ˈlɔŋˌʃɔr.mən/
A person who works at a port, loading and unloading cargo from ships.
The longshoreman carefully moved the crates from the dock to the ship.
Longshoreman → It is formed from "long" (from Old English "lang", meaning extended in distance) and "shore" (from Old English "sceor", meaning the land along the edge of a body of water) and "man" (meaning a person). A longshoreman is a person who works on the shore, particularly in loading and unloading ships.
Think of someone who works on the 'shore' ('sceor') and is involved in activities that are 'long' ('lang') — that's why a longshoreman is a person working on the shore.