To agree to purchase some good or service.
To add one's own name to the list of people who are participating in something (including amateur, but not professional, teams)
To add a name to the list of people who are participating in something.
To give lightly, in an offhand manner.
To intentionally throw an incomplete pass.
To waste, to squander.
To discard (trash, garbage, or the like), to toss out, to put in the trash, to dispose of.