1. Plural of grot; small grottos or caves.
Usage: chiefly British
2. Plural of grot; unpleasant or dirty places or things.
Usage: British slang; informal

Examples

• The limestone cliffs were dotted with small grots where ancient people once sheltered.
• The old apartment building was full of dark, damp grots that no one wanted to rent.
• Tourists explored the sea grots along the rocky coastline.
• He complained that the student housing was nothing but grots.
• The island's natural grots provided shelter for the shipwrecked sailors.