Try on Eliot's suit (6)
I believe the answer is:
hearts
'suit' is the definition.
(I've seen this before)
'try on eliot's' is the wordplay.
'try' becomes 'hear' ('hear' can be a synonym of 'try'**).
'on' says to put letters next to each other.
'eliot' becomes 'ts' (TS Eliot).
'hear'+'ts'='HEARTS'
(Other definitions for hearts that I've seen before include "Playing-card suit" , "Central parts" , "Suit for vital organs" , "Vital organs in the pack" , "Card suits in bodies" .)