Chosen clothes long and tight (7)
I believe the answer is:
pickled
'tight' is the definition.
(thesaurus)
'chosen clothes long' is the wordplay.
'chosen' becomes 'picked' (picking is a kind of choosing).
'clothes' means one lot of letters goes inside another (some letters clothe or cover others).
'long' becomes 'l'.
'picked' placed around 'l' is 'PICKLED'.
'and' acts as a link.
(Other definitions for pickled that I've seen before include "Soused" , "Drunk (as a gherkin?)" , "Preserved in liquid" , "Brahms and Liszt" , "Preserved - drunk" .)