a small amount of weed placed on top of previously smoked weed in a bowl, bong, etc

This word can also be used to describe an extremely small amount of weed in general less than 0.1g.

The "scrundle" is the patch of skin that connects the scrotum to the grundle.

to fondle with round squishy objects

The dry, pulverized bits at the bottom of a chip bag, cereal box, or other packaged snack.

The scrundle is where the scrotum meets the grundle.
The grundle is where the gooch meets the trundle.
The trundle is where the trouble meets the bundle.

related to scrundle-with regard to small amount of weed or small buds

A combination of scrunched and bundled.