What does "gib" mean?

Additional senses

1. 2.To act like a cat. [Obs.] Beau. & Fl.
2. 3.A piece or slip of metal or wood, notched or otherwise, in a machine or structure, to hold other parts in place or bind them together, or to afford a bearing surface; -- usually held or adjusted by means of a wedge, key, or screw. Gib and key, or Gib and cotter (Steam Engine), the fixed wedge or gib, and the driving wedge,key, or cotter, used for tightening the strap which holds the brasses at the end of a connecting rod.
3. 4.To secure or fasten with a gib, or gibs; to provide with a gib, or gibs. Gibbed lathe, an engine lathe in which the tool carriage is held down to the bed by a gib instead of by a weight.
4. 5.To balk. See Jib, v. i. Youatt.