Feline to get married (3)
I believe the answer is:
tom
'feline' is the definition.
(I know that tom is a type of house cat)
'to get married' is the wordplay.
'get' is a charade indicator (letters next to each other).
'married' becomes 'm' (abbreviation, e.g. in genealogy).
'to'+'m'='TOM'
(Other definitions for tom that I've seen before include "Male feline" , "- Lehrer, US humorist" , "Very small person" , "Man's name; male cat" , "Jerry's cartoon antagonist" .)