The American Heritage® Dictionary of the English Language, 4th Edition
n. Electronics Undesired signals or sounds, as of voices, in a telephone or other communications device as a result of coupling between transmission circuits.
n. Ancillary, incidental conversation: crosstalk among members of the panel.
n. undesirable signals from a neighbouring transmission circuit; undesired coupling between circuits
n. conversation that is incidental to the topic under discussion
v. To hold an incidental conversation
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the presence of an unwanted signal via an accidental coupling
Word Usage
"Jiang Kun, a master of the Chinese comic art known as crosstalk, is also off the program this year, with columnists speculating it's because his skit touched on a train crash last year in Wenzhou."