bick·er 
(bĭkər)
(bĭkər)intr.v. bick·ered, bick·er·ing, bick·ers
1. To engage in a bad-tempered quarrel, often in a petty manner over something trivial; squabble. See Synonyms at argue.
2.
a. To flicker or glitter: "bicker like a flame" (Robert Browning).
b. To move or flow with a rippling or gurgling sound.
n.
An angry quarrel; a squabble.
[Middle English bikeren, to attack.]
bicker·er n.