Clergyman's a bit of a booby, possibly dropping a tablet (6)

I believe the answer is:

father

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

'clergyman's' is the definition.
(Father is an example)

I don't understand the rest of the clue.

(Other definitions for father that I've seen before include "PA" , "and 13: Jolly gift-deliverer" , "Old man" , "The - of the House is the longest-serving MP" , "family member" .)

I've seen this clue in The Independent.

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