noun.
Petty quarreling. Usually considered a childish behaviour, although often applied to adults.
verb.
Present participle of bicker.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
a quarrel about petty points
Word Usage
"I have no interest in bickering over the strategic wisdom of Colbert's controversial congressional appearance, but I do have a bone to pick with his message."