Egham (ĕgˈəm) [key], city (1991 pop. 21,810), Surrey, SE England. Light engineering and gravel working are the main industries. Runnymede and part of Windsor Great Park, the royal estate, are in the outlying region. Nearby is Cooper's Hill, celebrated in poems by John Denham and Alexander Pope. The Royal Holloway College of the Univ. of London is in Egham.