One by one, as though hit over the head with an invisible mallet, the first-years were slumping unconscious in their seats; some slid right on to the floor, others merely hung over the arms of their chairs, their tongues lolling out.
There are no more uses of "mallet" in the book.
Show samples from other sources
She split the logs with a mallet and wedge.
Robinson Crusoe made a boat by hollwoing out a cedar-tree trunk with nothing but a mallet and chisel.