What is to utter rapidly and inconsiderately. Feltham. To clack wool, to cut off the sheep's mark, in order to make the wool weigh less and thus yield less duty. [Eng.] called?

clack — To utter rapidly and inconsiderately. Feltham. To clack wool, to cut off the sheep's mark, in order to make the wool weigh less and thus yield less duty. [Eng.]. (Webster's 1913.)