guttering

from The Collaborative International Dictionary of English v.0.48

Gutter \Gut*ter\, v. t. [imp. & p. p. {Guttered}; p. pr. & vb.
   n. {Guttering}.]
   1. To cut or form into small longitudinal hollows; to
      channel. --Shak.
      [1913 Webster]

   2. To supply with a gutter or gutters. [R.] --Dryden.
      [1913 Webster]