Mal ‧ vo ‧ li ‧ o /mælˈvəʊliəʊ/ BrE AmE
a character in the play ↑ Twelfth Night by William Shakespeare. Malvolio is one of Olivia's servants, and the people in Olivia's house play a trick on him by telling him that Olivia loves him. He then tries to begin a romantic relationship with her, but behaves so strangely that people think he is crazy and put him in prison.