- seaport in Hampshire, S England, on the English Channel: county district pop. 175,000
Origin of Portsmouthafter the city in England seaport in SE Va., on Hampton Roads: pop. 101,000
- A city of southern England on the English Channel near the Isle of Wight. Chartered in 1194, it is a major naval base.
- An independent city of southeast Virginia opposite Norfolk. It has been a major naval base since pre-Revolutionary times.