What is Grubbers?

Grubbers definition and meaning on Dictionary terms:
the thick-bodied, sluggish larva of several insects, as of a scarab beetle.
a dull, plodding person; drudge.

an unkempt person.
Slang. food; victuals.
any remaining roots or stumps after cutting vegetation to clear land for farming.

verb (used with object), grubbed,
to dig; clear of roots, stumps, etc.
to dig up by the roots; uproot (often followed by up or out).

Slang. to supply with food; feed.
Slang. to scrounge: to grub a cigarette.

verb (used without object), grubbed,
to dig; search by or as if by digging: We grubbed through piles of old junk to find the deed.
to lead a laborious or groveling life; drudge: It’s wonderful to have money after having to grub for so many years.

to engage in laborious study.
Slang. to eat; take food.