To surely, completely and tightly close an output port even when a lid body fitted on the output port of a liquid is mounted by any operation, and to prevent the liquid from being leaked and to completely discharge the liquid from a container.

A nozzle 1 is mounted by screwing on the output port 30 for the liquid of a container main body 3 to enable to cover a cap 2 on this nozzle 1. A nozzle protrusion 14 is provided on the outer peripheral face of the nozzle 1, and a cap protrusion 24 is provided on the inner side face of the cap 2, and a projection 20 is provided at the central part of the inner face of the cap 2. Therefore, even if the cap 2 is carelessly covered, it can be covered by a normal posture by fitting the protrusion 14 of the nozzle to the channel between the protrusion 24 of the cap. In addition, by lightly pushing the cap 2 under the condition, a hooking projection 15 enters into a hooking recessed part 25 and is hooked there, and at the same time, the projection 20 is press-contacted on the outlet 10 by an elastic force of the cap 2, and the outlet 10 is tightly enclosed.