告發,揭發
split on sb (to sb)
(向…)告發,揭發
to tell sb in authority about sth wrong, dishonest, etc. that sb else has done
Don't worry — he won't split on us.別擔心,他不會出賣我們的。
釋義來自《牛津高階英漢雙解詞典》第 9 版