Lower price in competition for some sirloin (8)
I believe the answer is:
undercut
'competition for some sirloin' is the definition.
I can't tell whether this defines the answer.
'lower price' is the wordplay.
'lower' becomes 'under' (under means lower down).
'price' becomes 'cut' (cut price is a kind of price).
'under'+'cut'='UNDERCUT'
'in' is the link.
Can you help me to learn more?
(Other definitions for undercut that I've seen before include "Beat (rival) on price" , "Weaken, undermine" , "Offer goods at a lower price to beat a competitor" , "Ask a lower price than" , "Sell cheaper than the competition" .)