society > occupation and work > equipment > building and constructing equipment > fastenings > [noun] > lock > part of lock > tumbler > projection on (3)
Mechanics. A stud or projection; spec. in a lock, a stationary stud which acts as a detent for the tumblers when their slots are in engagement…
A projecting part or object resembling the tusk of an animal. In a lock, ‘A sharp projecting point or claw which forms a means of engagement or…