Collectable item interesting to us (5)
I believe the answer is:
curio
'collectable' is the definition.
(I know that collectable can be written as curio)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for curio that I've seen before include "Rare thing sought for collection" , "Something unusual, perhaps worthy of collecting" , "Intriguing object worth collecting" , "Small fascinating collectible object" , "Unusual object, oddity" .)