Nab (?), n. [Cf. Knap, Knop, Knob.]
1.
The summit of an eminence.
[Prov. Eng.]
Halliwell.
2. Firearms
The cock of a gunlock.
Knight.
3. Locksmithing
The keeper, or box into which the lock is shot.
Knight.
© Webster 1913.
Nab, v. t. [imp. & p. p. Nabbed (?); p. pr. & vb. n. Nabbing.] [Dan nappe, or Sw. nappa.]
To catch or seize suddenly or unexpectedly.
[Colloq.]
Smollett.
© Webster 1913.