grotto
/ˈgrɒtəʊ/noun
(pl. -oes 或-os)
1- 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。
1.1
- 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。
派生词
grottoed
adjective词源
early 17th cent.: from Italian grotta, via Latin from Greek kruptē （see CRYPT）.