Holding a gun means that the other party is in a critical situation and needs to take up arms to protect themselves. This word is usually used to describe the helplessness and powerlessness of some vulnerable groups or individuals in the face of danger, or to describe the actions that need to be taken in some extreme situations.

For example, when a person is at a disadvantage in the game and needs to take up arms to protect himself, others may use the word "gun" to describe him. In addition, this word can also be used to describe some situations that need to take strong measures to solve problems, such as taking strong measures to complete tasks at work.

It should be noted that the word "gun" is not a formal vocabulary, but a network term. When using this word, we need to judge its meaning according to the specific context and scene.