n The act of making a snapping sound by pressing the thumb and a opposing finger of the same hand together and suddenly releasing the grip so that the finger hits against the palm.
n A brief, sudden period of a certain weather; (non-gloss definition|used primarily in the phrase cold snap.)
n A very short period of time (figuratively, the time taken to snap one's fingers), or a task that can be accomplished in such a period.
n (uncountable) A card game, primarily for children, in which players cry "snap" to claim pairs of matching cards.
v (intransitive|computing|graphical user interface) To jump to a fixed position relative to another element.
v (transitive) File:Finger snap.ogg | thumb | A video of a person snapping their fingers.File:Alt Finger Snap.ogv|thumb|Alternative snapping techniqueTo snap one's fingers: to make a snapping sound often by pressing the thumb and an opposing finger of the same hand together and suddenly releasing the grip so that the finger hits against the palm. Alternatively, by bringing the index finger quickly down onto the middle finger and thumb, thereby creating the same sound.
v (transitive) To take a photograph; to release a camera's shutter (which may make a snapping sound).
! (US) Used in place of expletive to express surprise, usually in response to a negative statement or news; often used facetiously.
! (British|Australia|NZ) Ritual utterance used after something is said by two people at exactly the same time.