Clack-box

a garrulous person, so called from the rattle formerly used by vagrants to make a rattling noise and attract attention.—Norfolk.

⁂ A common proverb in this county is, “your tongue goes like A baker's clap-dish ,” which is evidently a modern corruption of the beggars' clap  or clack-dish  mentioned in Measure for Measure. It was a wooden dish with a movable cover.