Style, say, with top tucked in (5)
I believe the answer is:
taste
'style' is the definition.
(I've seen this before)
'say with top tucked in' is the wordplay.
'say with' becomes 'tas' (I am not sure about this - if you are sure you should believe this answer much more).
'top' means to remove the first letter.
'tucked in' becomes 'ate' (to tuck into food is to eat it).
'ate' with its initial letter removed is 'te'.
'tas'+'te'='TASTE'
Can you help me to learn more?
(Other definitions for taste that I've seen before include "choice" , "Sample, savour" , "eat only the smallest amount" , "Small sample of food" , "Savour in state" .)