List held by Uncle Anthony (4)
I believe the answer is:
lean
'list' is the definition.
(both can mean to tilt)
'held by uncle anthony' is the wordplay.
'held by' indicates a hidden word.
'LEAN' can be found hidden inside 'uncle anthony'.
(Other definitions for lean that I've seen before include "Insufficient - incline" , "without success" , "Without excess flesh" , "Current update (colloq.)" , "Slender" .)