snib
Concise Oxford English Dictionary © 2008 Oxford University Press:
snib /snɪb/ chiefly Scottish & Irish
▶noun a lock, latch, or fastening for a door or window.
■ a small catch on a lock which holds the bolt in or out.
▶verb (snibs, snibbing, snibbed) fasten or lock.– origin C19: perh. from Low Ger. snibbe ‘beak-like point’.
'snib' also found in these Oxford entries:

