The Collaborative International Dictionary of English v.0.48:

Sneap \Sneap\, v. t. [Cf. Icel. sneypa to dishonor, disgrace,
   chide, but also E. snip, and snub.]
   1. To check; to reprimand; to rebuke; to chide. [Obs.] --Bp.
      Hall.
      [1913 Webster]

   2. To nip; to blast; to blight. [Obs.]
      [1913 Webster]

            Biron is like an envious, sneaping frost. --Shak.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Sneap \Sneap\, n.
   A reprimand; a rebuke. [Obs.]
   [1913 Webster]

         My lord, I will not undergo this sneap without reply.
                                                  --Shak.
   [1913 Webster] Sneath