Definitions
There is 1 meaning of the phrase
Book Up.
Book Up - as a verb
Book all available places or tickets
Example Sentences
"I need to book up on my history before the exam."
"She asked me to book up a hotel room for her."
"He decided to book up his favorite author's latest work."
"I always book up my appointment with the dentist well in advance."
"I'm going to book up some time off for my vacation next month."