Fill meaning : To occupy fully, to take up all of. To add contents to (a container, cavity or the like) so that it is full. To enter (something), making it full. To become full. To become pervaded with something. To satisfy or obey (an order, request or requirement). To install someone, or be installed, in (a position or office), eliminating a vacancy. To treat (a tooth) by adding a dental filling to it. To fill or supply fully with food; to feed; to satisfy. To trim (a yard) so that the wind blows on the after side of the sails. (of a male) To have sexual intercourse with (a female).