gulf
Concise Oxford English Dictionary © 2008 Oxford University Press:
gulf/ɡʌlf/
▶noun
- 1 a deep inlet of the sea almost surrounded by land, with a narrow mouth.
- 2 a deep ravine or chasm.
- 3 a substantial difference between two people, concepts, or situations.
– origin ME: from OFr. golfe, from Ital. golfo, based on Gk kolpos ‘bosom, gulf’.
'gulf' also found in these Oxford entries:

