Crossword Genius

Pinnochio's endings in a cruise line (1,3,1)

Ross

I believe the answer is:

p and o

I'm a little stuck... Click here to teach me more about this clue!

'pinnochio's endings' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'a cruise line' is the wordplay.
I cannot quite understand how this works, but
'a' could be 'an' and 'an' is located in the answer.
This explanation may well be incorrect...

'in' acts as a link.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.
Want a hint initially instead of a full solution? Install my app