
It's the scientific word
for DUST.
The Big Bang Theory Season 12, Episode 14

Dust yourself off, forget it. Move on.
The Big Bang Theory Season 2, Episode 22

and get her to DUST
my room at the same time,
The Big Bang Theory Season 5, Episode 21

It's right off the DUST jacket
of my mom's last book.
The Big Bang Theory Season 5, Episode 12

But the sign and tape are covered
with a layer of DUST which indicates...
The Big Bang Theory Season 2, Episode 15