S: (n) drop, drib, driblet (a small indefinite quantity (especially of a liquid)) "he had a drop too much to drink"; "a drop of each sample was analyzed"; "there is not a drop of pity in that man"; "years afterward, they would pay the blood-money, driblet by driblet"--Kipling
S: (n) drop, dip, fall, free fall (a sudden sharp decrease in some quantity) "a drop of 57 points on the Dow Jones index"; "there was a drop in pressure in the pulmonary artery"; "a dip in prices"; "when that became known the price of their stock went into free fall"
S: (n) correction (a drop in stock market activity or stock prices following a period of increases) "market runups are invariably followed by a correction"
S: (n) voltage drop (a decrease in voltage along a conductor through which current is flowing)
S: (v) drop (change from one level to another) "She dropped into army jargon"
S: (v) drop (fall or sink into a state of exhaustion or death) "shop til you drop"
S: (v) devolve, deteriorate, drop, degenerate (grow worse) "Her condition deteriorated"; "Conditions in the slums degenerated"; "The discussion devolved into a shouting match"
S: (v) drop (give birth; used for animals) "The cow dropped her calf this morning"