Bewitch one around St Patrick's Day, maybe (5)

I believe the answer is:

charm

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

'bewitch' is the definition.
(I know that bewitch can be written as charm)

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

Can you help me to learn more?

(Other definitions for charm that I've seen before include "pleasing feature" , "Entrance, bewitch" , "Delight; magical object" , "Bewitch or delight" , "small ornament" .)

I've seen this clue in The Irish Times.

Want a hint initially instead of a full solution? Install my app