What might swell looker sport as well as yuppie's jackets? (4)
I believe the answer is:
stye
'what might swell looker' is the definition.
I can't tell whether this defines the answer.
'sport as well as yuppie's jackets?' is the wordplay.
'sport' becomes 'st' (I can't explain this - if you can you should give a lot more credence to this answer).
'as well as' means one lot of letters go next to another.
'jackets?' says to hollow out the word (remove centre letters) (I've seen 'jacket' mean this (the letters worn by the word as a 'jacket' are use)).
'yuppie' with its middle taken out is 'ye'.
'st'+'ye'='STYE'
Can you help me to learn more?
(Other definitions for stye that I've seen before include "Seeing problem" , "Viewer's complaint" , "Infection on the edge of the eye" , "Ocular inflammation" , "It pains viewer" .)