What does « Ghurm » mean in the Quran?

Zakah expenditures are only for the poor and for the needy and for those employed to collect [zakah] and for bringing hearts together [for Islam] and for freeing captives [or slaves] and for those in debt and for the cause of Allah and for the [stranded] traveler - an obligation [imposed] by Allah. And Allah is Knowing and Wise.

And among the bedouins are some who consider what they spend as a loss and await for you turns of misfortune. Upon them will be a misfortune of evil. And Allah is Hearing and Knowing.

And those who say, "Our Lord, avert from us the punishment of Hell. Indeed, its punishment is ever adhering;

Or do you, [O Muhammad], ask of them a payment, so they are by debt burdened down?

[Saying], "Indeed, we are [now] in debt;