Green’s Dictionary of Slang

1. to get ready to benefit from someone else’s misfortune.

1925

M.W. Beckwith Pubs. Folklore Foundation 6 116: When John Crow see mauger cow, him roas’ plantain fe him.

2. to plot actively to bring about someone’s downfall.

1960

cited in Cassidy & LePage Dict. Jam. Eng. (1980).