1. noun /dɹɒp,dɹɑp/
a) A small mass of liquid just large enough to hold its own weight via surface tension, usually one that falls from a source of liquid.
Put three drops of oil into the mixture.
b) The space or distance below a cliff or other high position into which someone or something could fall.
On one side of the road was a 50-foot drop.
2. verb /dɹɒp,dɹɑp/
a) To fall in droplets (of a liquid).
A single shot was fired and the bird dropped from the sky.
b) To drip (a liquid).
Dont drop that plate!
Wikipedia foundation.