The Collaborative International Dictionary of English v.0.48:

Snib \Snib\, n.
   A reprimand; a snub. [Obs.] --Marston.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Snib \Snib\, v. t. [OE. snibben; cf. Dan. snibbe, and E. snub,
   v. t.]
   To check; to sneap; to sneb. [Obs.]
   [1913 Webster]

         Him would he snib sharply for the nones. --Chaucer.
   [1913 Webster]