yawn

名词 yawn:

1. an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom
   同义词：yawning, oscitance, oscitancy

动词 yawn:

1. utter a yawn, as from lack of oxygen or when one is tired
2. be wide open
   同义词：gape, yaw

1. His long boring story made me yawn.
   他的冗长的故事听得我直打呵欠。
2. I gave a loud yawn, but he just kept on talking.
   我大声打了个呵欠，可他还是不停地讲下去。

yawn

v.（动词）
yawned,yawn.ing,yawns
v.intr.（不及物动词）
To open the mouth wide with a deep inhalation, usually involuntarily from drowsiness, fatigue, or boredom.
打哈欠：因疲倦、因顿或无聊而不由自主地张大嘴深吸气
To open wide; gape:
张开；裂开：
例句：
The chasm yawned at our feet.
陷坑在我们的脚下裂开

v.tr.（及物动词）
To utter wearily, while or as if while yawning:
打着哈欠说：当打着哈欠或似乎打哈欠时，疲倦地说话：
例句：
yawned his disapproval of the silly venture.
对那愚蠢的冒险行动表示意兴阑珊

n.（名词）
The act of yawning.
打哈欠：打哈欠的动作
A fatigued or bored response.
哈欠：疲乏的或厌烦的反应
Informal One that provokes yawns; a bore:
【非正式用语】 让人打哈欠的事（人）；乏味的事（人）：
例句：
The movie was nothing more than one big yawn.
这部电影只能令人哈欠连天

来源：
Middle English yanen
中古英语 yanen
alteration of yonen, yenen
yonen的变化, yenen
from Old English geonian
源自 古英语 geonian

【引伸】
yawn.er
n.（名词）