can‧yon /ˈkænjən/ noun [countable]
[Date: 1800-1900; Language: American Spanish; Origin: cañón, from Spanish, 'tube, pipe', from caña 'cane', from Latin canna; ⇒ cane¹]
a deep valley with very steep sides of rock that usually has a river running through it

[TahlilGaran] Dictionary of Contemporary English ▲

valley an area of lower land between two lines of hills or mountains, usually with a river flowing through it:
The route passes through a remote mountain valley.
a trek up the Gokyo Valley to see Mount Everest
gorge a deep narrow valley with steep sides - often used in names, especially in Europe:
The river flows through a deep gorge.
Cheddar Gorge
canyon a deep valley with very steep sides - often used in names, especially in North and South America:
She looked down the side of the canyon.
We visited the Grand Canyon in Arizona.
ravine a small valley with very steep sides:
He fell down a ravine.
glen a deep narrow valley in Scotland or Ireland:
They followed the river along the glen.
the Glens of Antrim
gully a small narrow valley, usually formed by a lot of rain flowing down the side of a hill:
They reached the top by scrambling up a gully.

[TahlilGaran] English Thesaurus ▲