Marketing campaign parent sent up, refers to equipment required for baby (4)
I believe the answer is:
pram
'refers to equipment required for baby' is the definition.
I can't tell whether this defines the answer.
'marketing campaign parent sent up' is the wordplay.
'marketing' becomes 'pr' (abbreviation for public relations).
'campaign parent' becomes 'ma' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'sent up' shows that the letters should be reversed in order.
'ma' in reverse letter order is 'am'.
'pr'+'am'='PRAM'
Can you help me to learn more?
(Other definitions for pram that I've seen before include "Ramp for a baby buggy" , "Baby transport" , "accommodation for child" , "lighter" , "early transport" .)