n.
1.a sharp abrupt noise as if two objects hit together
2.a simple valve with a hinge on one side clack v.
1.make a rattling sound
2.make a clucking sounds, characteristic of hens
3.speak (about unimportant matters) rapidly and incessantly
Idiom of the Day
in some/many respects
with regard to some or many details
In many respects our new house is much more convenient than our previous one.