vi.

1. 发出长而尖的叫声
2. 【俚】告密；泄密[（+on）]
   He squealed on his mates.

   他告发了他的伙伴。

vt.

1. 用长而尖的声音说；用长而尖的声音发出

n.

1. 尖叫声[C]
   The children gave a squeal of fright.

   孩子们发出惊吓的尖叫声。

n.

v.

1. make a squeal.
   ▸say something in a high-pitched, excited tone.
2. complain.
3. informal inform on someone.