Day Thurman eats small fruit? (7)
I believe the answer is:
satsuma
'fruit?' is the definition.
(I know that satsuma is a type of fruit)
'day thurman eats small' is the wordplay.
'day' becomes 'sat' (abbreviation for Saturday).
'thurman' becomes 'uma' (I've seen this in another clue).
'eats' is an insertion indicator.
'small' becomes 's' (abbreviation - e.g. clothes size).
'sat'+'uma'='satuma'
'satuma' going around 's' is 'SATSUMA'.
(Other definitions for satsuma that I've seen before include "Tangerine-like fruit" , "Seedless citrus fruit" , "that's segmented" , "Small variety of orange similar to mandarin" , "Easily peeled orange" .)