Artist's support and comfort left (5)
I believe the answer is:
easel
'artist's support' is the definition.
(I've seen this before)
'comfort left' is the wordplay.
'comfort' becomes 'ease' (easing is a kind of comforting).
'left' becomes 'l' (common abbreviation).
'ease'+'l'='EASEL'
'and' is the link.
(Other definitions for easel that I've seen before include "Support for artist's canvas" , "Lease it out to the artist" , "Artistic tripod" , "Artist's tripod" , "The rest of artists" .)