and Chops. Chop and change (To). To barter by the rule of thumb. Boys “chop” one article for another (Anglo-Saxon, cip-an, or ceáp-ian, to sell or barter).
“How the House of Lords and House of Commons chopped round.” —Thackeray: The Four Georges (George I.).
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894