Pressure put on to buy (8)
I believe the answer is:
purchase
This clue might be a double definition.
'pressure put' is the first definition.
'purchase' can be an answer for 'pressure' (thesaurus). I am not sure about the 'put' bit.
'to buy' is the second definition.
(synonyms)
'on' acts as a link.
Can you help me to learn more?
(Other definitions for purchase that I've seen before include "that has gone through the barcode reader?" , "firm grasp" , "Acquire" , "Shop successfully" , "Procure" .)