Food fit for leave-taking? (8)
I believe the answer is:
farewell
'leave-taking?' is the definition.
('farewell' can be a synonym of 'leave-taking')
'food fit' is the wordplay.
'food' becomes 'fare' (fare is a kind of food).
'fit' becomes 'well' (associated in meaning).
'fare'+'well'='FAREWELL'
'for' acts as a link.
(Other definitions for farewell that I've seen before include "Goodbye, cheerio" , "Wish on leave-taking" , "Valedictory word" , "symphony" , "Say goodbye" .)