無む蓋がい

noun, noun which may take the genitive case particle 'no'

open; uncovered

Describes something without a lid or roof, such as an open-top vehicle or an uncovered container. Often used in technical or descriptive contexts.

• 無む蓋がいのトラックで荷に物もつを運はこぶ。

  Transport goods in an open truck.

• 無む蓋がいの容よう器きに液えき体たいを入いれてはいけない。

  Do not put liquid in an uncovered container.