Judge initially joining outside court's meeting place (8)
I believe the answer is:
junction
'meeting place' is the definition.
(I've seen this in another clue)
'judge initially joining outside court's' is the wordplay.
'initially' says to take the initial letters.
'joining' becomes 'union' (a union joins things).
'outside' indicates putting letters inside.
'court' becomes 'ct' (abbreviation used in road names).
The initial letter of 'judge' is 'j'.
'union' placed around 'ct' is 'unction'.
'j'+'unction'='JUNCTION'
(Other definitions for junction that I've seen before include "Crossroads" , "Motorway exit" , "See 7" , "Point where ways meet" , "Place where railway lines meet and join" .)