(slang, US, usually in the plural) A drop of a drug used to make a person fall asleep or become unconscious or stupefied for the purpose of robbery, etc., typically by mixing it into a drink.

plural of knockout drop

(medicine) A morbid condition of the foot in which the toe is depressed and the heel elevated.

plural of drop ceiling

A safe (lockable box) with a slot allowing items to be deposited without unlocking it.

plural of drop safe

(slang, hip-hop) To show off one's talent and ability, as if to educate others. / Used other than figuratively or idiomatically: see drop, science.

A liquid medical product in a small bottle, which can be inserted into the ear using a dropper (usually provided). See also eardrop.

plural of cough drop

(nautical) To release the anchor of a ship or boat, allowing it to fall to the bed of a body of water and thereby securing the vessel in place. / (euphemistic) To defecate.