Source : Webster's Revised Unabridged Dictionary (1913)

Treillage \Treil"lage\, n. [F. treillage. See {Trellis}.]
   Latticework for supporting vines, etc.; an espalier; a
   trellis. --Spectator.

         I shall plant the roses against my treillage to-morrow.
                                                  --Walpole.

Source : WordNet®

treillage
     n : latticework used to support climbing plants [syn: {trellis}]