Will's night flight flew there, partly travelling west (7)
I believe the answer is:
twelfth
'will's night' is the definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.
'flight flew there partly travelling west' is the wordplay.
'partly' indicates the answer is hidden within the clue.
'travelling west' shows that the letters should be reversed in order.
'htflewt' can be found hidden inside 'flight flew there'.
'htflewt' written backwards gives 'TWELFTH'.
Can you help me to learn more?
(Other definitions for twelfth that I've seen before include "Ordinal number" , "Play (for January 6?)" , "Play by 8" , "August day when grouse shooting begins" , "day of parades" .)