We found 14 dictionaries that define the word hard stuff:

General (8 matching dictionaries)

1. the hard stuff: Merriam-Webster
2. hard stuff: Oxford Learner's Dictionaries
3. the hard stuff: Cambridge Advanced Learner's Dictionary
4. hard stuff: Infoplease Dictionary
5. hard stuff: Dictionary.com
6. Hard Stuff, The Hard Stuff (Wayne Kramer album), The Hard Stuff: Wikipedia, the Free Encyclopedia

Business (1 matching dictionary)

7. MoneyGlossary.com (No longer online)

Miscellaneous (1 matching dictionary)

8. the hard stuff: Idioms

Slang (4 matching dictionaries)

9. hard stuff: Green’s Dictionary of Slang
10. Hard stuff: Street Terms: Drugs and the Drug Trade
11. hard stuff, Hard Stuff: Urban Dictionary

Definitions from Wikipedia (Hard Stuff) ▸ noun:  an English hard rock group which included John Du Cann and Paul Hammond, formerly of Atomic Rooster. Types: diamond, quartz, topaz, sapphire, ruby, emerald, jasper, more... Phrases: the hard stuff, forgo the hard stuff, more... ▸ Words similar to hard stuff ▸ Usage examples for hard stuff ▸ Idioms related to hard stuff ▸ Wikipedia articles (New!) ▸ Words that often appear near hard stuff ▸ Rhymes of hard stuff ▸ Invented words related to hard stuff