1. A stubborn, cynical person, especially an employee or colleague who resists efforts to improve. "Nut" is English slang for "head".

2. A tough problem that is hard to solve is a "hard nut to crack".
1. Jim tried everything to improve the audit team's morale, but the hard nuts just labelled him "lame."

2. Until the US economy recovers, unemployment will be a hard nut to crack.
by Jasper Ferg March 04, 2011

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Top Definition
Tough, rough. Normally shortened to hard.
Mostly used to take the mick out of someone who thinks they are tough.
"OOOoo hardnut, easy blud."
by WB January 06, 2005

The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt