IPA: //ˈklɪərɪŋhaʊs//
KK: /ˈklɪrɪŋhaʊs/
A place or organization where banks and other financial institutions settle their accounts and share information.
The banks used the clearinghouse to settle their transactions efficiently.
Clearinghouse is formed from "clearing" (from the verb "clear", meaning to settle or remove) and "house" (meaning a place or building). A clearinghouse is a place where financial transactions are settled or cleared.
Think of a place where transactions are 'settled' ('clearing') — that's what a clearinghouse does.
No commonly confused words.