Merriam-Webster Online Dictionary
trellis (noun)1.
a frame of latticework used as a screen or as a support for climbing plants
2.
a construction (as a summerhouse) chiefly of latticework
3.
an arrangement that forms or gives the effect of a lattice - a trellis of interlacing streams
transitive verb
1.
to provide with a trellis , especially to train (as a vine) on a trellis
2.
to cross or interlace on or through - interweave
Trellis (Wikipedia)