Top definition
Any crushed/finely powdered ADD(attention deficit disorder) medication one would sniff/snort to gain an edge in any work related or academic field.

Any powdered ADD/ADHD medication used nasally or added to a beverage for their stimulant properties.
'whats study-dust?'
"its just when i powder my amphetamine salts"

"dawg this study-dust got me geeked"

"man i havent slept in like 40 hours...guess i did too much study-dust"
by trillerthanthou August 19, 2011
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