Members of the clergy 2 and 3? (9)
I believe the answer is:
cardinals
I believe this is a double definition.
'members of the clergy' is the first definition.
(cardinals are senior Catholic clergymen)
'2 and 3?' is the second definition.
(2 and 3 are cardinal numbers)
(Other definitions for cardinals that I've seen before include "Birds from America" , "Leading dignitaries" , "ones and twos?" .)