Definition:-

• A container consisting of one or more cells, in which chemical energy is converted into electricity and used as a source of power. (noun)
• A fortified emplacement for heavy guns. (noun)
• A set of units of equipment, typically when connected together. (noun)
• The crime or tort of unconsented physical contact with another person, even where the contact is not violent but merely menacing or offensive. (noun)
• The pitcher and the catcher in a game, considered as a unit. (noun)