Vocabulary

ਮੱਚਣੀ
macchni

to burn, to be set alight — here meaning jealousy/envy will consume the enemies

verb
In this song
Balle Jatta · Diljit Dosanjh
Verse 4
ਵੈਰੀਆਂ ਦੇ ਤੇ ਮੱਚਣੀ ਆਂ
vairiyaan de te macchni aan
The enemies are going to burn