[trel.lis] n [ME trelis, fr. MF treliz fabric of coarse weave, trellis, fr. (assumed) VL trilicius woven with triple thread, fr. L tri- + licium thread] (15c) 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 ~ of interlacing streams" -- trel.lised adj
[2]trellis vt (15c) 1: to provide with a trellis; esp: to train (as a vine) on a trellis
2: to cross or interlace on or through: interweave