To let something fall or allow it to fall. She accidentally dropped the vase on the floor.
To decrease or reduce in level, amount, or value. The temperature is expected to drop significantly tonight.
To stop doing or discussing something. Let's drop the subject and talk about something else.
To release or deliver something, especially from a vehicle or aircraft. The plane dropped supplies to the stranded hikers.
To omit or exclude something. He decided to drop the last chapter from his book.
To visit someone briefly or unexpectedly. I might drop by your place later if I have time.
To fall or descend suddenly or vertically. The coins dropped into the slot with a clink.