Henry joins Bill and Jack for trip to Mecca (4)
I believe the answer is:
hadj
'trip to mecca' is the definition.
I can't tell whether this definition defines the answer.
'henry joins bill and jack' is the wordplay.
'henry' becomes 'h' ('H' can be a synonym of 'henry').
'joins' is a charade indicator (letters next to each other).
'bill' becomes 'ad' (advertisement stuck on wall).
'and' is a charade indicator (letters next to each other).
'jack' becomes 'j' (playing card abbreviation).
'h'+'ad'+'j'='HADJ'
'for' is the link.
Can you help me to learn more?
(Other definitions for hadj that I've seen before include "Muslim religious journey to Mecca" , "Islamic pilgrimage" , "A pilgrimage to Mecca, duty of Muslims" , "Muslim pilgrimage" , "Spiritual journey" .)