Mother with Highlander's lucky object (6)
I believe the answer is:
mascot
'lucky object' is the definition.
I know that 'lucky' relates to this answer. I also know that both the answer and definition are singular nouns
'mother with highlander's' is the wordplay.
'mother' becomes 'ma' (Ma is another word for mother or mum).
'with' means one lot of letters go next to another.
'highlander' becomes 'scot' (I've seen this in another clue).
'ma'+'scot'='MASCOT'
Can you help me to learn more?
(Other definitions for mascot that I've seen before include "Thing believed to bring good luck to, say, team" , ".Person or thing believed to bring good luck" , "One for good luck" , "good luck charm required" , "Lucky charm" .)