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3.
A dirty, uncouth person who does not have proper hygeine, often characterised by a low level of education, often engaging in disgusting behaviours and often associated with hardcore illicit drug use.
Look at the grubs hanging around the Methadone clinic.
by Alan344 September 08, 2009
 
8.
A grub is a person who is a sloppy mess. They rarely shower and are constantly filthy. This word was derived from the legendary cottage vacation of RB.

Ryan: Dave's hair is greasy he hasnt showered in a week.
Matt: Wow! What a grub!
by Ryan12345656 May 27, 2008
 
9.
The female reproductive organ according to Australian Minister for Education Christopher Pyne.
You're such a grub!
by stevieboy11 May 15, 2014
 
10.
A person or people who crawls to management in a company and undermines other workers in the process for there own personal gain at the expense of others
Worker 1 "That grubby cunt from the West is in the office again crawling to the boss"
Worker 2 "I hate that fucking grub"
by MrX0000 March 04, 2010
 
11.
In Gears of War, COG slang for Locust soldiers, called this because of their tendancy to pop up from the ground in holes also called grub holes.
Damn I just killed 3 grubs within 5 seconds!
by TheDuhMan August 05, 2008
 
12.
In L.A. slang something that is extremely delicious and fulfills a deep hunger, especially when one is drunk and or high.
Damn, that Burrito was grub as fuck!!!
by BobbySax September 09, 2010
 
13.
verb: to eat, especially heartily
grubbed: past tense of grub
My stomach's eating my backbone dude, let's stop and grub.

Dude, I left my shades back where we grubbed!
by shankus November 30, 2004
 
14.
a person who is an overall cheap ass, unable to pay for other peoples expenses yet alone their own. generally unclean, smells bad, wears same clothes for days on end, showers on an annual basis.
David Mickleburgh: I've got 5 cents to spare, whos gonna buy me food and some new clothes

Person 1: Youre such a fucking grub
by muckface fcgeezacks September 19, 2009