Quick answer
Pegasus is a boy name meaning "strong; from a water spring".
Pronunciation: English /ˈpɛɡ.ə.səs/.
Meaning and history
This name comes from the Greek Πήγασος (Pegasos), possibly either from πηγός (pegos) meaning "strong" or πηγαῖος (pegaios) meaning "from a water spring". In Greek mythology Pegasus was the winged horse that sprang from the blood of Medusa after she was killed by Perseus. There is a constellation in the northern sky named after the horse.
Notes and context
Usage: greek mythology | Ancient Greek: Πήγασος