The answer is the word sue.

Solution process: the cow's tail here refers to the lower part of the word cow, which is a Jian, bite off the mouth instead of the mouth, the combination together is the word "sue".

1. [ gào zhuàng ] to bring an accusation.

Lao She, "The Two Horses," paragraph 5.1: "If Mali wants to file a complaint, we're all finished; if she raises her hand, everything will be over."

2. Farewell? [ gào bié ] resignation; farewell.

Xiao Hong 《Hand》："No one went to say goodbye with her, nor did anyone say goodbye to her."

3. farewell? [ gào cí ] Farewell, resignation.

Guo Moruo 《洪波曲》Chapter 9, 2: "The summoner and I were polite for a while, and I got up to take my leave while he seemed to have nothing more to say."

4. report? [ bào gào ] to declare; to tell.

Hong Shen The Screenwriting Methods of Film and Drama, Chapter 7, 5: "Complementary recounting of the past is to report to the audience the facts that happened before the story, or the facts that happened in the middle of the two acts."

5. zhūn zhūn? [ zhūn zhūn gào jiè ] assiduous: teaching tirelessly; admonition: exhortation. The word "advice" is used to describe a person's behavior in a particular situation.

Origin: Song Fei Gun, "Liang Xi Man Zhi": "I ordered all the sons and daughters to sit down; I set up wine; I earnestly admonished them; the family members saw that the public had no disease and were in a hurry; they were stunned and did not know what to answer."