noun

• (Christianity, literary, chiefly archaic) A spirit; a human soul.
  "hen gins her grieued ghost thus to lament and mourne."
• (by extension) Any faint shadowy semblance; an unsubstantial image.
  "."
• (writing) Ellipsis of ghostwriter.
  "I’ve written both as a ghost for experts and under my name."
• (Internet) An unresponsive user on IRC, resulting from the user's client disconnecting without notifying the server.
  "This will let you open a query with NickServ again so you can remove your “ghost” from the server: […]"

adj

• (African-American Vernacular, slang) In the form be ghost: not present or involved; absent, gone.
  "Thug held up a middle finger. "A'ight y'all. I'm ghost.""

verb

• (transitive)
  "since Julius Caesar, / Who at Philippi the good Brutus ghosted"
• (transitive)
  "It spread slowly up from the sea-rim, a welling upwards of pure white light, ghosting the beach with silver and drawing the grey bastions of sandstone out of formless space."
• (transitive)
• (transitive)
  "My recommendation: Do me. Don't take the chance that I'll get shiv-happy on your wannabe ass. Ghost me, Riddick. Would if I were you. Though I notice he tried to ghost my ass. When he shot up that stranger instead."