Battery  n. (pl. -ies) 1 usu. Portable container of an electrically charged cell or cells as a source of current. 2 (often attrib.) Series of cages for the intensive breeding and rearing of poultry or cattle. 3 set of similar units of equipment; series, sequence. 4 emplacement for heavy guns. 5 law unlawful physical violence against a person. [latin: related to *battle]