UTILITY

[noun] [U] [slightly formal] - the usefulness of something, esp. in a practical wayThe utility of the rescue equipment has still to be assessed in a real emergency.(slightly formal) A utility is a service which is used by the public, such as an electricity or gas supply or a train service.Different tax arrangements apply to public utilities.high utility billsA utility room is a room, esp. in a house, where useful equipment such as a washing machine is used and where things can be stored.