cross·hatch 
(krôshăch′, krŏs-)
(krôshăch′, krŏs-)tr.v. cross·hatched, cross·hatch·ing, cross·hatch·es
To mark or shade with two or more intersecting sets of parallel lines.
n.
1. A pattern made by such lines.
2. The symbol (#).
cross-hatch′ing n.