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It's a combination of "grub" and "rubbish", making another word for junk food.
I don't feel like cooking tonight. Let's just go out and pick up some grubbish.
by luckysocks113 August 06, 2014
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2
A mix of garbage and rubbish, usually in the context of source-code.
Fix that routine- it's absolute grubbish.
by Rev. Five May 25, 2005
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