1
general::
1. Also, burst out in or into. Break out into sudden activity. For example, burst into flames means "break out in a fire," as in This dry woodpile may well burst into flames. A version of this term, which dates from the 16th century, was used figuratively by John Milton: "Fame is the spur . . . But the fair guerdon [reward] when we hope to find, and think to burst out into sudden blaze" (Lycidas, 1637). 2. Also, burst out. Give sudden utterance to. For example,
American Heritage Idioms
2
general::
Phrase(s): burst into something
Go to burst out into something.
McGrawhill's American Idioms And Phrasal Verbs