n. Cheeky or impertinent responses, especially to criticism.
v. To respond in a disputative, often sarcastic manner.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. light teasing repartee
Word Usage
"These same Kaffirs did their work with amazing alacrity, and looked as if they enjoyed it; there was no "backchat" when an order was given -- usually by friend"