n.凹室,壁龛,(花园)凉亭,<古>僻静处
The bookcase fits neatly into the alcove.
书架正好放得进壁凹。
The alcove held a couch.
这凹进去的地方有一张长沙发.
Set into an alcove under the side deck is a tiny wash basin.
舷边甲板下面的一个凹处放了一个小小的洗脸盆。