Friend has a turn crossing major road (5)
I believe the answer is:
amigo
'friend' is the definition.
('friend' in Spanish)
'a turn crossing major road' is the wordplay.
'turn' becomes 'go' (a person's move in a board game).
'crossing' indicates putting letters inside (to cross can mean to go over or around).
'major road' becomes 'MI' (resembles M1, English motorway).
'a'+'go'='ago'
'ago' enclosing 'mi' is 'AMIGO'.
'has' is the link.
(Other definitions for amigo that I've seen before include "Hispanic comrade" , "A Mexican pal" , "Friend in Spanish-speaking area" , "Mexican friend" , "friend in Uruguay" .)