a.

1. 阴暗的；阴沉的
   He came to see me in a gloomy winter day.

   他在一个阴沉的冬日来看我。

2. 阴郁的；忧郁的
   I can tell by your gloomy face that the news is bad.

   从你忧郁的脸上我能看出情况不妙。

adj.

1. poorly lit, especially so as to cause fear or depression.
2. causing or feeling depression or despondency.