/haʊl; haul/
n
(a) long loud wailing cry of a dog, wolf, etc （狗、狼等的）尖利的长嚎, 　叫.
(b) loud cry of a person expressing pain, scorn, amusement, etc （表示疼痛、轻蔑、高兴等的）高声叫喊
*let out a howl of laughter, agony, rage 发出狂笑、哀号、怒吼声
* (fig 比喻) The proposed changes caused howls of protest from the public. 拟议中的改革引起公众一片抗议的呼声.
(c) similar noise made by a strong wind, an electrical amplifier, etc （狂风、电力扬声器等的）啸鸣.

v
1 [I, Ipr] make a howl 尖声嚎叫; 　叫; 大声叫喊; 啸鸣
*wolves howling in the forest 在森林中　叫的狼
* howl in agony 哀叫
* howl with laughter 高声大笑
* The wind howled through the trees. 风呼啸着穿过树林.
2 [I] weep loudly 大声哭
*The baby howled all night. 那婴儿哇哇地哭了一夜.
3 [Tn] utter (sth) with a howl 吼叫着说出（某事）
*`I hate you all!' she howled. ｀我恨你们所有的人!＇她吼叫着说.
* The crowd howled its displeasure. 人群怒吼着表示不满.
4 (phr v) howl sb down (of an audience, etc) prevent a speaker from being heard by shouting scornfully （指听众等）以表示轻蔑的吼叫声压倒讲演者的声音, 把讲演者轰下台.