noun
1.
run-in (with sb) ( informal ) an argument or a fight :
The fiery player has had numerous run-ins with referees.
2.
run-in (to sth) ( BrE ) = run-up
noun
1.
run-in (with sb) ( informal ) an argument or a fight :
The fiery player has had numerous run-ins with referees.
2.
run-in (to sth) ( BrE ) = run-up
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005