Swan, perhaps, or elephant (9)
I believe the answer is:
trumpeter
This clue could be a double definition.
'swan perhaps' is the first definition.
'trumpeter' can be an answer for 'swan' (I've seen this before). I'm not certain of the 'perhaps' bit.
'elephant' is the second definition.
(elephants 'trumpet' with their trunks)
'or' acts as a link.
Can you help me to learn more?
(Other definitions for trumpeter that I've seen before include "loud-voiced bird" , "Instrumentalist - type of swan" , "sends out signals?" , "kind of pigeon" , "Elephant perhaps" .)