ghost

Meaning

1. nounA disembodied soul; a soul or spirit of a deceased person; a spirit appearing after death.

   Example: Everyone believed that the ghost of an old lady haunted the crypt.

2. adjectiveIn the form be ghost: not present or involved; absent, gone.
3. verbOf a disembodied soul: to appear (somewhere or to someone) in the form of an apparition; to haunt. To imbue (something) with a ghost-like effect or hue. To continuously cause (someone or something) trouble; specifically, to continuously be in the thoughts of (someone) in a disturbing manner; to perturb, to trouble. To kill (someone). To gray out (a visual element) to indicate that it is unavailable. To forcibly disconnect (an IRC user) who is using one's reserved nickname. To stop communicating with (someone) on social media, through text messages, etc., without explanation, especially as a way of ending a relationship; hence, to end a relationship with (someone) by stopping all communication without explanation. To transfer (a prisoner) to another prison, usually without first informing the prisoner. Synonym of ghostwrite (“to write (a literary work or speech), or produce (an artistic work)), in the place of someone”); also, to carry out (an artistic performance) in the place of someone.

Source: Wiktionary (CC BY-SA 4.0)