Drop in and cry out (4)

I believe the answer is:

call

This clue is a double definition.

'drop in' is the first definition.
(thesaurus)

'cry out' is the second definition.
(thesaurus)

'and' acts as a link.

(Other definitions for call that I've seen before include "Shout; ring" , "Shout - name" , "Be in control" , "Phone; cry" , "decision" .)

I've seen this clue in the Evening Standard.

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