What is "langstone"

Langstone is a village near Havant, Hampshire in the south east of England in Portsmouth. It has good railway connections to London, Southampton, Portsmouth and Brighton, from the nearby Havant railway station. There are many large gated detached houses on the main road, "Langstone Road" and on the roads surrounding this. It has a sailing club, several architecturally unusual buildings, and several historically significant buildings, including a converted (water) millhouse and a converted 18th century windmill, the latter of which is a local landmark.