A person who reads in bed.

'All right,' said the bookseller amiably. 'Miss Chapman, you take the book up with you and read it in bed if you want to. Are you a librocubicularist?' Titania looked a little scandalized. 'It's all right my dear,' said Helen. 'He only means are you fond of reading in bed.'
Christopher Morley, The Haunted Bookshop

This word ultimately comes from theRead More...