Dictionary

An act of exchanging or trading.

Example: All in all, it was an even exchange.

A place for conducting trading.

Example: The stock exchange is open for trading.

A telephone exchange.

The fourth through sixth digits of a ten-digit phone number (the first three before the introduction of area codes).

Example: NPA-NXX-1234 is standard format, where NPA is the area code and NXX is the exchange.

To trade or barter.

Example: I'll gladly exchange my place for yours.

To replace with, as a substitute.

Example: I'd like to exchange this shirt for one in a larger size.