Cullis

from WordNet (r) 3.0 (2006)

cullis
    n 1: a gutter in a roof

from The Collaborative International Dictionary of English v.0.48

Cullis \Cul"lis\ (k?l"l?s), n. [OF. cole["i]s, F. coulis, fr.
   OF. & F. couler to strain, to flow, fr. L. colare to filter,
   strain; cf. LL. coladicium. Cf. {Colander}.]
   A strong broth of meat, strained and made clear for invalids;
   also, a savory jelly. [Obs.]
   [1913 Webster]

         When I am exellent at caudles
         And cullises . . . you shall be welcome to me. --Beau.
                                                  & Fl.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Cullis \Cul"lis\, n.; pl. {Cullises} (-?z). [F.coulisse groove,
   fr. the same source as E. cullis broth.] (Arch.)
   A gutter in a roof; a channel or groove.
   [1913 Webster]