n.睡前饮料；睡帽
The soldier followed the king's daughters to the parlor for a nightcap. 士兵跟着国王的女儿们来到客厅喝睡前酒。
We had a nightcap before bedtime to round off a perfect day. 我们戴上睡帽上床睡觉，一天的生活结束了。
A little old man with a nightcap on his head leaned out of the upstairs window. 一个头戴睡帽的小老头从楼上探出。
