(gab) noun Colloq.
Idle talk; loquacity.
—v.i. gabbed, gab·bing To talk much or idly; chatter. [Prob. <ON gabba mock]

(gab) noun Mech.
A hook, as on a rod conveying the motion of an eccentric. For illustration see ECCENTRIC. [Cf. Flemish gabbe a notch]

(gab, gäb) noun Scot.
The mouth.