n.

1. 呻吟聲；嗚咽聲[C]
   Each time she moved her head she let out a moan.

   她每轉動一下頭，就發出一聲呻吟。

2. （風，樹等的）蕭蕭聲[U][S1]
3. 【口】悲歎；不滿，發牢騷[C]
   His constant moan is that no one understands him.

   他老是抱怨沒有人理解他。

vi.

1. 呻吟；嗚咽
   The sick man moaned all night.

   病人通夜呻吟。

2. 發出蕭蕭聲
   The wind came moaning through the trees.

   風發著呼嘯聲穿過樹林。

3. 【口】悲歎；抱怨[（+about）]
   He is always moaning about how tired he is.

   他總是抱怨如何如何累。

vt.

1. 以呻吟聲說出
   "I'm so stiff I can't move," she moaned.

   "我渾身發僵，動彈不得，"她呻吟著說。

2. 悲歎，抱怨[+（that）]
   He is always moaning his luck.

   他老是抱怨運氣不好。

n.

1. a long, low sound expressing suffering or sexual pleasure.
   ▸a low sound made by the wind.
2. informal a trivial complaint.

v.

1. utter or make a moan.
   ▸literary lament.
2. complain or grumble.