Understand and run in (9)

I believe the answer is:

apprehend

I believe this is a double definition.

'understand' is the first definition.
(apprehending is a kind of understanding)

'run in' is the second definition.
(thesaurus)

'and' acts as a link.

(Other definitions for apprehend that I've seen before include "Catch; understand" , "Arrest - grasp" , "Recognise - arrest - suspect" , "Fear - arrest" , "bust" .)

I've seen this clue in the Evening Standard.

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