ristikko[Finnois]

nom
1 : an arrangement of points or particles or objects in a regular periodic pattern in 2 or 3 dimensions
2 : a trellis on which ornamental shrub or fruit tree is trained to grow flat
3 : a pattern of regularly spaced horizontal and vertical lines
4 : a barrier that has parallel or crossed bars blocking a passage but admitting air
5 : a framework of metal bars used as a partition or a grate