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1.
An idiom meaning to stubbornly quibble over something inconsequential, irrelevant, minor or off-topic. A cavilling dispute.

Another way of saying "to argue for the sake of it".
Unfortunately the meeting didn't go well. Eric starting getting pedantic, and decided to argue the toss over a trivial detail of the plan.
by Brother Strange September 04, 2009

Words related to argue the toss

argue cavil mardy petty querrelous quibble stubborn
 
2.
Vrb phrs. To argue or dispute loudly and at length.

British
"I swear, Bob, if you badmouth my girlie one more time we're gonna argue the toss in front of your whole family!"
by Dylan Hewson April 11, 2005