A striking elevation of knowledge (4)

I believe the answer is:

bump

I'm a little stuck... Click here to teach me more about this clue!

'a striking' is the definition.
(I know that bump is a type of impact)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for bump that I've seen before include "Light blow or jolting collision" , "Evidence of pregnancy - knock (into)" , "Swelling caused by a blow perhaps" , "Collide - protuberance" , "little impact" .)

I've seen this clue in The Globe and Mail.

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