A male luer (10) is surrounded by a hood (20). A lever (30) is connected to a base end portion (13) of the male luer via a base (15). The lever includes a locking portion (31) and an operating portion (35). A locking claw (32) protrudes from the locking portion toward the male luer. The locking portion is disposed in a cut-out (23) that is formed in the hood. The lever is elastically pivotable so that when an outer surface of the operating portion is pressed, the locking claw moves away from the male luer. When viewed along a central axis (3a), a connector main body (3) has a major axis (15a) in the direction in which the male luer opposes the lever.