What is to exchange; substitute one thing for another. We go on chopping and changing our friends. L'Estrange. To chop logic, to dispute with an affected use of logical terms; to argue sophistically called?

chop — To exchange; substitute one thing for another. We go on chopping and changing our friends. L'Estrange. To chop logic, to dispute with an affected use of logical terms; to argue sophistically. (Webster's 1913.)