<p><strong>noun</strong></p><ul><li>the design and disposition of windows and other exterior openings of a building.</li><li>an ornamental motif having the form of a blind arcade or arch, as in medieval cabinetwork.</li><li>a perforation in a structure.</li><li>an operation to effect such an opening.</li><li>the creation of an artificial opening into the labyrinth of the ear to restore hearing loss from otosclerosis.</li></ul>