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
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visits to Father Christmas's grotto .参观安放圣诞老人的壁龛。
"early 17th cent.: from Italian