After a quake sure get significant movement (7)

I believe the answer is:

gesture

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'significant movement' is the definition.
(I've seen this before)

'after a quake sure get' is the wordplay.
'sure get' can be anagrammed to 'GESTURE'.
But, I'm unsure how this is indicated.

Can you help me to learn more?

(Other definitions for gesture that I've seen before include "Expressive motion" , "Expressive movement of body" , "Hand signal" , "wave, perhaps?" , "Eg, shrug or wave" .)

I've seen this clue in The Times.

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