A connector comprising a terminal that is connected to an electric wire, and a resin housing that houses and holds the terminal, wherein one groove or a plurality of grooves, each of which includes a directional component perpendicular to the lengthwise direction of the electric wire and has protrusions on the surface thereof, extends across a region of a portion of the surface of the terminal, and the terminal is embedded and secured within the resin that constitutes the housing in this portion including the region across which the groove extends. By employing this type of structure, the number of components can be reduced, and excellent bonding and airtightness is achieved between the terminal and the housing.