Definition of "fenestra" [‖Fe•nes•tra]

• Anatomy A small opening, especially either of two windowlike apertures in the medial wall of the middle ear. (noun)
• The opening in a bone made by surgical fenestration. (noun)
• Zoology A transparent spot or marking, as on the wing of a moth or butterfly. (noun)
• Architecture A windowlike opening. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "‘Quanti canicula ille in fenestra’ on February 12, 2010 at 12: 07 am Claustrophobic inspector"
• "The word fenestra is illustrated by a previous section of the Rule, No.LXXXII. p. 30."
• "The stapes, or stirrup, has its end of an oval shape, which fits a small hole called fenestra ovalis, in that part of the ear called the labyrinth, or innermost chamber of the ear."