stop

verb:to come to an end; to cease movement or operation
- The bus will stop at the next corner.
verb:to prevent someone from doing something or something from happening
- We must stop him from making a terrible mistake.
verb:to block or close an opening or passage
- He used a rag to stop the leak in the pipe.
noun:a place designated for a vehicle to halt and pick up or let off passengers
- I'll meet you at the bus stop on Main Street.
noun:a punctuation mark, especially a period
- Remember to put a stop at the end of your sentence.
noun:a control, button, or lever that halts a machine or process when activated
- Press the stop on the treadmill if you feel dizzy.