上うわ蓋ぶたうわぶたMeanings1nounlid; cover; capRefers to the top lid or cover of a box, container, jar, etc.箱はこの上うわ蓋ぶたを開あける。I open the lid of the box.この瓶びんの上うわ蓋ぶたは固かたくて開あかない。The cap of this bottle is tight and won't open.