clack (
http://definr.com/clack)
n 1: a sharp abrupt noise as if two objects hit together; may be
repeated [syn:
clap]
2: a simple valve with a hinge on one side; allows fluid to
flow in only one direction [syn:
clack valve, {clapper
valve}]
v 1: make a rattling sound [syn:
clatter,
brattle]
2: make a clucking sounds, characteristic of hens [syn:
cluck,
click]
3: speak (about unimportant matters) rapidly and incessantly
[syn:
chatter,
piffle,
palaver,
prate,
tittle-tattle,
twaddle,
maunder,
prattle,
blab,
gibber,
tattle,
blabber,
gabble]