creasing

from The Collaborative International Dictionary of English v.0.48

Creasing \Creas"ing\ (kr[=e]s"[i^]ng), n. (Arch.)
   A layer of tiles forming a corona for a wall. --Knight.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Crease \Crease\, v. t. [imp. & p. p. {Creased} (kr?st); p. pr. &
   vb. n. {Creasing}.]
   To make a crease or mark in, as by folding or doubling.
   [1913 Webster]

         Creased, like dog's ears in a folio.     --Gray.
   [1913 Webster]