Dropsy \Drop"sy\, n.; pl. {Dropsies}. [OE. dropsie, dropesie, OF. idropisie, F. hydropisie, L. hydropisis, fr. Gr. ? dropsy, fr. ? water. See {Water}, and cf. {Hydropsy}.] (Med.) An unnatural collection of serous fluid in any serous cavity of the body, or in the subcutaneous cellular tissue. --Dunglison. [1913 Webster]