Look in second container (4)
I believe the answer is:
scan
'look' is the definition.
(I've seen this before)
'second container' is the wordplay.
'second' becomes 's' (common abbreviation).
'container' becomes 'can' (can is a kind of container).
's'+'can'='SCAN'
'in' is the link.
(Other definitions for scan that I've seen before include "Examine closely to analyse metrically" , "Glance at quickly rather than thoroughly" , "Examine, view" , "Medical procedure" , "Analyse a piece of verse for metre" .)