1. a type of fish. found in wild rivers can be up to four feet long.
2. as slang can refer to a giant monster. this comes from the fish, and how big it is compared to other fish.
1. My dad caught a mari on our last fishing trip, the thing was huge.
2. That mari asked me out to prom, but he's so big and scary i don't want to go with him. he'll probably just take me to his cave.