gunk

Wastewater is filled with human feces, garbage and other gross gunk that carries dangerous disease, and is piped away from our civilization for that reason.

She chases a tip down a dark alley leading to a spotless lab where her numbered locker yields tubes of white gunk, syringes of green miracle formula and some easy-to-read instructions.

Poppy was found in a "dehydrated and malnourished" state with "gunk that was rock solid" around her eyes.

To investigate the impact on indoor air quality, scientists study the gunk that builds up with laboratory models of surfaces.

In the past she's sent samples of the "gunk" away to be tested.