Definition of perforating:
(v) :
(transitive) To pierce; to penetrate.
(v) :
(transitive) To make a line of holes in (a thin material) to allow separation at the line.
(adj) :
(philately, biology) Perforated.
(adj) :
(obsolete, as a participial adjective) Perforated, having a hole.
(adj) :
(obsolete, as a participle) Perforated.