Definition of snowdon:
(n) :
The highest mountain in Wales at 1,085 metres (3560 feet) high, in the county of Gwynedd (OS grid ref SH6054).
(n) :
A placename:
(n) :
A neighbourhood of Montreal, Quebec, Canada, in the borough of Côte-des-Neiges–Notre-Dame-de-Grâce, named after James Snowdon.
(n) :
A hill 495 metres high (1625 feet), on Dartmoor, South Hams district, Devon, England (OS grid ref SX6668).
(n) :
An English habitational surname from toponymy [in turn from Old English] for someone who lived in any of these places.