IPA: /ˈkʌstəmzˌhaʊs/
KK: /ˈkʌstəmzˌhaʊs/
A building where customs duties are collected and where goods are inspected when they enter or leave a country.
The customs house was busy with officials checking the imported goods.
Customshouse → The word is formed from "custom" (from Old French *costume*, meaning a duty or tax) and "house" (from Old English *hus*, meaning a dwelling or shelter). A customshouse is a building where customs duties are collected and where goods are inspected before entering a country.
Think of a 'house' where 'customs' duties are managed — that's what a customshouse is.
No commonly confused words.