The Collaborative International Dictionary of English v.0.48:
Gib \Gib\, v. t. [imp. & p. p. Gibbed; p. pr. & vb. n. Gibbing.] To secure or fasten with a gib, or gibs; to provide with a gib, or gibs. [1913 Webster] Gibbed lathe, an engine lathe in which the tool carriage is held down to the bed by a gib instead of by a weight. [1913 Webster]