Entertaining rider runs in at rodeo, bucking (8)

I believe the answer is:

toreador

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

'entertaining rider' is the definition.
'toreador' can be an answer for 'rider'. I'm unsure of the 'entertaining' bit.

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for toreador that I've seen before include "killer on mount" , "Bullfighter in Carmen" , "fighter in ring" , "Adore rot (anag)" , "Mounted bullfighter" .)

I've seen this clue in The Telegraph.

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