To borrow or use something that belongs to someone else. Hey, can I bum a pen?
Feeling sad. I've been bumming ever since my boyfriend broke up with me.
Sl. discouraged; depressed. I feel so bummed. I think I need a nice hot bath. When you're feeling bummed out, think how much you've accomplished.
1. n. a vagrant; a good-for-nothing. You had better get your finances in order unless you want to become a bum.
2. mod. bad; faulty. This is a bum fuse. No wonder it won’t run.
3. Go to bum something (off someone).
See bummed out
mod. down; depressed; suffering from something disagreeable. (Collegiate.) I’m really bumming. I think I need somebody to talk to.