The first person married made a catty noise (5)
I believe the answer is:
mewed
'made a catty noise' is the definition.
The answer and definition can be both to do with communicating as well as being past participle verbs.
Perhaps there's an association between them I don't understand?
'the first person married' is the wordplay.
'the first person' becomes 'me' (first-person pronoun).
'married' becomes 'wed' (similar in meaning).
'me'+'wed'='MEWED'
Can you help me to learn more?
(Other definitions for mewed that I've seen before include "made catty remark" , "Made cat noise" , "confined" , "cried pitifully" .)