Leaving home, trainees worked extra long weekend (6)
I believe the answer is:
easter
'extra long weekend' is the definition.
The definition and answer can be both related to time as well as being singular nouns.
Maybe you can see an association between them that I don't see?
'leaving home trainees worked' is the wordplay.
'leaving' suggests deleting specific letters.
'home' becomes 'in' (to be in is to be (at) home).
'worked' indicates anagramming the letters.
'trainees' with 'in' removed is 'traees'.
'traees' is an anagram of 'EASTER'.
Can you help me to learn more?
(Other definitions for easter that I've seen before include "Church festival" , "Time to celebrate" , "Snug retreat" , "Christian feast of the Resurrection" , "A terse sort of Spring festival?" .)