Definition of "grotto" in English

noun

1. A small cave.

2. An artificial cavern-like retreat.

3. A Marian shrine, usually built in a cavern-like structure.

4. A local organization of cavers that typically organizes trips to caves and provides information and training for caving; a caving club.

5. (Satanism) A secretive name for a local group of underground Satanists.

6. (Philippines) A garden or roadside shrine with a small cave containing a statue of the Blessed Virgin Mary (usually Our Lady of Lourdes and sometimes paired with a water feature)