noun: (military, firearms) The centre of a target, inside the inner and magpie.
noun: A shot which hits the centre of a target.
noun: (darts) The two central rings on a dartboard.
noun: A hard striped peppermint-flavoured boiled sweet.
noun: (nautical, obsolete) Thick glass set into the side of a ship to let in light.
noun: A hand-cancelled postmark issued by a counter clerk at a post office, typically done on a receipt for proof of mailing.
noun: The central part of a crown glass disk, with concentric ripple effect.
noun: A convex glass lens which is placed in front of a lamp to concentrate the light so as to make it more conspicuous as a signal; also the lantern itself.
noun: (military, by extension) A commonly-known reference point used when indicating the location or direction of something.
noun: (architecture) An oculus.
noun: (UK, slang) A £50 banknote.
noun: (philately, informal) Any of the first postage stamps produced in Brazil from 1843.
