to dig; search by or as if by digging: We grubbed through piles of old junk to find the deed.
11.
to lead a laborious or groveling life; drudge: It's wonderful to have money after having to grub for so many years.
12.
to engage in laborious study.
13.
Slang. to eat; take food.
Origin: 1250–1300; Middle English grubbe (noun), grubben (v.); akin to Old High German grubilōn to dig, German grübeln to rack (the brain), Old Norse gryfia hole, pit; see grave1, groove
c.1300, from hypothetical O.E. *grubbian, from W.Gmc. *grubbjan (cf. O.H.G. grubilon "to dig, search," Ger. grübeln "to meditate, ponder"), from P.Gmc. *grub- "to dig," base of O.E. grafan (see grave (v.)). The noun sense of "larva" (c.1400) is perhaps from the notion
of "digging insect," or from the possibly unrelated M.E. grub "dwarfish fellow." The slang sense of "food" is first recorded 1659, said to be from birds eating grubs, but also often linked with bub "drink." Grubby is c.1845, from grub (n.) in a sense of "dirty child," who presumably got that way from digging in earth.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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