society > occupation and work > equipment > building and constructing equipment > fastenings > [noun] > key > parts of key > bit > incisions on (3)
Each of the incisions in the bit of a key, corresponding to the ‘wards’ of the lock. Cf. step-ward n. at step, n.1 compounds 1.
An offset or part resembling a step in outline, singly or in a series; e.g. in the bit of a key.
The main ward of a lock or key.