a.

1. 隐蔽的；隐藏的；暗地的
   covert military operations

   秘密军事行动

   a covert glance

   偷偷的一瞥

2. 【罕】掩盖的；遮蔽的
3. 【律】受丈夫保护的

n.

1. 隐蔽处；（鸟兽藏身的）丛林[C]
   fire from coverts

   从掩蔽处射击

2. 隐蔽；掩饰[U]
3. 【鸟】覆羽[C][P1]

adj.

n.

1. a thicket in which game can hide.
2. Ornithology  a feather covering the base of a main flight or tail feather of a bird.