'Heathrow' means the row of houses on the heath.
Heathrow was a hamlet of farms, orchards and cottages, demolished in 1944 for London Airport. The station opened in 1977 as Heathrow Central, became Heathrow Central Terminals 1, 2, 3 in 1983 and Heathrow Terminals 1, 2, 3 in 1986. Terminal 1 closed in 2015, and in January 2016 the station was renamed Heathrow Terminals 2 & 3.