Crossword Genius

Parts you may have thrilled to? (4)

Ross

I believe the answer is:

bits

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

Here is my best explanation:

'parts' is the definition.
(bit is a kind of part)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

This clue was last seen in Evening Standard