1. A natural underground chamber or series of chambers, typically formed in limestone or other soluble rock
The explorers discovered a hidden cave filled with ancient paintings.
Os exploradores descobriram uma gruta escondida cheia de pinturas antigas.
2. A cavern or hollow space beneath the earth's surface
They took shelter in the cave during the storm.
Eles se abrigaram na gruta durante a tempestade.
3. An artificial grotto or cave-like structure, often decorative or in a garden
The palace had an ornamental grotto in its gardens.
O palácio tinha uma gruta ornamental em seus jardins.