A cannibalistic fish who eats anything and everything (even other fish) to have a big home all to herself.
There were several fish in the fish tank living with Gillyweed. Then all of a sudden there was one less fish. And then another disappeared. And finally, the last fish living with Gillyweed was found severed in two; head and tail were found floating at the top of the tank. And Gillyweed just got bigger and bigger.
Don't be a Gillyweed! Cannibalism is BAD!!!!
1. One that is homosexual in nature but may not be.
2. To be acting like a Gillyweed is to do stupid or uncalled-for things.
3. Gillan's nickname when he's high and silly.
1. That kid just wrote a poem, what a Gillyweed.
2. What are you doing shoplifting from the Dollar Store? You actin' like a lil' Gillyweed!