Number are practitioners of meditation? (5)
I believe the answer is:
dozen
'number' is the definition.
(I know that dozen is a type of large integer)
'practitioners of meditation?' is the wordplay.
'practitioners of' becomes 'do' (I can't justify this - if you can you should give a lot more credence to this answer).
'meditation?' becomes 'zen' (I've seen this in other clues).
'do'+'zen'='DOZEN'
'are' acts as a link.
Can you help me to learn more?
(Other definitions for dozen that I've seen before include "XII" , "A small number" , "Twelve (or thirteen for a baker?)" , "A number of disciples" , "Group of twelve" .)