Definitions

1. verb

to tear or pull apart, especially with the teeth

“The dog began to grissen the old shoe, ripping it to shreds.”

2. verb

to cut or sever something roughly

“The lumberjack grissen the tree trunk, using a chainsaw to make quick work of it.”

3. noun

a rough or torn piece of something

“The grissen of the tree branch hung precariously from the power line.”