Tea-seller displays support for painter (5)
I believe the answer is:
easel
'support for painter' is the definition.
'easel' can be an answer for 'support' (I've seen this in another clue). I'm not sure about the 'for painter' bit.
'tea-seller displays' is the wordplay.
'displays' indicates a hidden word (part of the clue displays the answer).
'EASEL' can be found hidden inside 'tea seller'.
Can you help me to learn more?
(Other definitions for easel that I've seen before include "Blackboard-frame" , "Artist's wooden frame" , "dead-headed plant" , "Painting support" , "Picture frame" .)