(OS grid ref SD3838) A village and civil parish in Fylde borough, Lancashire, England .

(OS grid ref TQ9841) A suburb in Great Chart with Singleton parish, Ashford borough, Kent, England .

(OS grid ref SU8713) A village and civil parish in Chichester district, West Sussex, England .

A town north-west of Newcastle, New South Wales, Australia.

An outer southern suburb of Perth, Western Australia.

(playing cards) A playing card that is the only one of its suit in a hand, especially at bridge.

(playing cards) A hand containing only one card of a certain suit.

A single object, especially one of a group.

(computing) A class that may not be instantiated more than once, i.e. that implements the singleton design pattern.

(mathematics) A set with exactly one element.

A child or animal that is born singly, not as a twin or other multiple birth.

A person without a romantic partner.

A person without a dissociative identity.

(phonetics) A single consonant, as opposed to a geminated consonant.