A connector includes: a wall; and a terminal spaced apart from the wall and configured to be electrically connected to another connector. The terminal comprises: a contact part configured to be pressed by the another connector, in a state that the connector is connected to the another connector, and a holding part extended from the contact part. The holding part is, while the connector is connected to the another connector, configured to be contacted with the contact part that is moved in accordance with a pressure exerted by the another connector, be deformed by the contact with the contact part to press the wall, and maintain a connection between the connector and the another connector by transmitting, to the contact part, a repulsive force caused by pressing the wall.