A common abbreviation of exchange and exchequer.(noun)
The Century Dictionary (Public Domain)
Use "exch" in a sentence
"I just write my NOB personalized check for $5,000 USD to Intercam in the morning and that afternoon I have the $62,500 MXN (assuming a 12.5 to 1 exch. rate) in my Santander Bank account."
"And -- but we did exch -- verify certain points by mail, which he agreed to do."
"[321] In 1760 treas. of navy; sec. of state, 1762; first ld. of treas. and ch. of exch.,"