cinje -cij- gismu

x1 is a wrinkle/crease/fold [shape/form] in x2.

See also korcu, polje, boxfo, boxna.

In notes:

boxfo
x1 is a sheet/foil/blanket [2-dimensional shape/form flexible in 3 dimensions] of material x2.
boxna
x1 is a wave [periodic pattern] in medium x2, wave-form x3, wave-length x4, frequency x5.
korcu
(adjective:) x1 is bent/crooked/not straight or direct/[twisted]/folded.
polje
x1 (force) folds/creases x2 at locus/loci/forming crease(s)/bend(s) x3.