Look at half a dozen we sent over (4)
I believe the answer is:
view
'look at' is the definition.
(to view something is to look at it)
'half a dozen we sent over' is the wordplay.
'half a dozen' becomes 'VI' (Roman numerals for six - half a dozen).
'sent over' shows that the letters should be reversed in order.
'we' in reverse letter order is 'ew'.
'vi'+'ew'='VIEW'
(Other definitions for view that I've seen before include "See" , "Perspective" , "benefit of picture window" , "Look at" , "Opinion; watch" .)