1. plural of grotto; small caves or caverns, especially picturesque ones
2. artificial cave-like structures or recesses, often used as garden features or shrines

Examples

• The limestone cliffs were filled with natural grottoes carved by centuries of erosion.
• Tourists explored the mysterious grottoes along the coastline.
• The garden featured several decorative grottoes with small waterfalls.
• Ancient pilgrims would pray in the sacred grottoes of the mountainside.
• The park’s artificial grottoes provided cool shelter on hot summer days.
• Sea caves and grottoes dotted the rocky shore of the island.