The Collaborative International Dictionary of English v.0.48:

Chaff \Chaff\, v. i. [imp. & p. p. Chaffed; p. pr. & vb. n.
   Chaffing.]
   To use light, idle language by way of fun or ridicule; to
   banter.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Chaffing \Chaff"ing\, n.
   The use of light, frivolous language by way of fun or
   ridicule; raillery; banter.
   [1913 Webster]