To keep in possession or use.
To employ by paying a retainer.
To hold back (a pupil) instead of allowing them to advance to the next class or year.
To keep in one's pay or service.
To hold secure.
To waste, to squander.
To intentionally throw an incomplete pass.
To give lightly, in an offhand manner.
To discard (trash, garbage, or the like), to toss out, to put in the trash, to dispose of.