Sibling gets permit after month at university (9)
I believe the answer is:
septuplet
'sibling' is the definition.
Both the answer and definition are singular nouns.
Perhaps they are linked in a way I don't understand?
'permit after month at university' is the wordplay.
'permit' becomes 'let' (synonyms).
'after' is a charade indicator (letters next to each other).
'month' becomes 'sept' (Sept is an example).
'at university' becomes 'up' ('up' can mean studying at university).
'sept'+'up'='septup'
'let' after 'septup' is 'SEPTUPLET'.
'gets' is the link.
Can you help me to learn more?
(Other definitions for septuplet that I've seen before include "Quick notes" , "One in large family" , "unusual baby" .)