Definitions
1.nounAn act of exchanging or trading."All in all, it was an even exchange."
2.nounA place for conducting trading."The stock exchange is open for trading."
3.nounA telephone exchange.
4.nounThe fourth through sixth digits of a ten-digit phone number (the first three before the introduction of area codes)."NPA-NXX-1234 is standard format, where NPA is the area code and NXX is the exchange."
5.nounA conversation."After an exchange with the manager, we were no wiser."
6.nounThe loss of one piece and associated capture of another
7.nounThe thing given or received in return; especially, a publication exchanged for another.
8.nounThe transfer of substances or elements like gas, amino-acids, ions etc. sometimes through a surface like a membrane.
9.nounThe difference between the values of money in different places.