Raised part of bank crest (5)

I believe the answer is:

ridge

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This clue could be a double definition.

'raised part of bank' is the first definition.
'ridge' can be an answer for 'bank'. I am unsure of the 'raised part of' bit.

'crest' is the second definition.
(geographical term)

Can you help me to learn more?

(Other definitions for ridge that I've seen before include "Line of higher ground" , "Elongated area of high pressure" , "Raised earth between furrows" , "Raised crease" , "German Baltic port, Buxtehude home" .)

I've seen this clue in The Irish Times.

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