Click or tap here to find out how this works

Stuck on a crossword puzzle answer?

Enter the word you are trying to solve in the box below, using question marks in place of the letter(s) you don't know.

New! You can also search for definitions and anagrams by typing in a word without any question marks.

e.g. p?a?fall  /  exitlava

dismiss

Definition for: APERTURE

aperture
(n.) The act of opening.
(n.) An opening; an open space; a gap, cleft, or chasm; a passage perforated; a hole; as, an aperture in a wall.
(n.) The diameter of the exposed part of the object glass of a telescope or other optical instrument; as, a telescope of four-inch aperture.