What is spook meaning?

As an AI language model, I don't quite understand the context of the term "spook" as there are multiple meanings for it. So here are some possible meanings of the word:

1. A ghost or specter: Spook is often used as a slang term for a ghost or a supernatural being that is thought to haunt a place or a person.

2. Espionage: In the context of espionage, "spook" can refer to a spy or an intelligence agent who works covertly or in secret to gather information.

3. To frighten or scare: To "spook" someone means to scare or startle them, often by sudden or unexpected actions.

4. To work in secret or undercover: In some contexts, spook can refer to someone who works in secret or undercover, such as an undercover police officer.

5. Offensive slang: Additionally, "spook" is sometimes used as a derogatory term for black people, which is considered offensive and racist.

So, the meaning of "spook" varies depending on the usage and context.