Dictionary

noun

Definitions

1. An act of exchanging or trading.

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

2. A place for conducting trading.

   Example: The stock exchange is open for trading.

3. A telephone exchange.

4. 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.