Image of trendy company included (4)
I believe the answer is:
icon
'image' is the definition.
('icon' can be a synonym of 'image')
'trendy company included' is the wordplay.
'trendy' becomes 'in'.
'company' becomes 'co' (abbreviation).
'included' indicates putting letters inside.
'in' going around 'co' is 'ICON'.
'of' acts as a link.
(Other definitions for icon that I've seen before include "Religious painting of Greek origin" , "Holy image or symbol on computer screen" , "Adored person" , "Representative symbol, may be on computer screen" , "object of admiration" .)