to start producing sth suddenly and with great force :
The aircraft crashed and burst into flames (= suddenly began to burn) .
She burst into tears (= suddenly began to cry) .
to start producing sth suddenly and with great force :
The aircraft crashed and burst into flames (= suddenly began to burn) .
She burst into tears (= suddenly began to cry) .
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005