Wiktionary
thunks
n. (plural of thunk English)
Usage examples of "thunks".
The bullets made hollow thunks as they struck high on the unprotected side of the missile.
For more than a minute, there was dead silence, then three metallic thunks - three dead bolts being released.
He listened to the metallic thunks of all the dead bolts sliding back, and then she opened the door a crack and looked out.