a small picturesque cave, especially an artificial one in a park or garden (尤指公园或花园中人工开挖的别致的)洞穴 ■an indoor structure resembling a cave (屋内的)洞室;神龛 visits to Father Christmas's grotto. 参观安放圣诞老人的壁龛。
派生 grottoed adjective 语源
early 17th cent.: from Italian grotta, via Latin from Greek kruptē (see crypt)