book up

== English == === Pronunciation === === Verb === book up (third-person singular simple present books up, present participle booking up, simple past and past participle booked up) (transitive) To reserve or book all of something, for example by purchasing all the tickets. (intransitive) To have all of its tickets or reservations purchased. (chess, slang) To study opening lines in great detail in order to gain an advantage. (transitive, slang) To study or learn (something). ==== Derived terms ==== booked up