EXAMPLES FROM THE WEB FOR GRUB
It was really only a paraphrase of the old story of the grub and the butterfly.
Them grub all gone, them Injuns mebbyso ketchum hungry belly.
Yo' all time eatum my grub, yo' no givum me money, no givum hoss, no givum notting.
Let's go back, eat the grub, and then continue the hunt for Ned.
I had some hardtack and tea in my “grub bag,” and these I left with her.
He caught the fancy of the king, knelt down a grub, and rose a butterfly.
You'll see, he'll soon turn up, he's got a hollow nose, he can scent the grub from afar.
He looked as if he were degenerating into the grub even before he died.
They asked for a wage, a bunk, and grub; nothing else mattered.
She give him his grub and her services, and he give her the Old Harry and her wages.
c.1300, from hypothetical Old English *grubbian, from West Germanic *grubbjan (cf. Middle Dutch grobben, Old High German grubilon "to dig, search," German grübeln "to meditate, ponder"), from Proto-Germanic *grub- "to dig," base of Old English grafan (see grave (v.)).