Somehow buy and sell to east for fifty (5-3)
I believe the answer is:
bulls-eye
'fifty' is the definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.
'somehow buy and sell to east' is the wordplay.
'somehow' indicates an anagram.
'and' says to put letters next to each other.
'to east' becomes 'e' (synonyms).
'buy' after 'sell' is 'sellbuy'.
'sellbuy' with letters rearranged gives 'bullsey'.
'bullsey'+'e'='BULLS-EYE'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for bulls-eye that I've seen before include "Target's centre" , "Accurate shot" , "Boiled sweet" , "Centre of the target (4'1, 3)" , "Dartboard area" .)