What does the cryptic crossword clue "Rage can break out, leading to mass slaughter (7)" mean?

The definition is "slaughter". The wordplay uses an anagram. anagram of RAGE + CAN = CARNAGE; definition: "slaughter" The answer is CARNAGE.

Rage can break out, leading to mass slaughter (7)

Guardian Cryptic #29423 | 29 Across | 2024-07-01 flower