simple past tense and past participle of balance the books

plural of fake book

(music) A collection of musical lead sheets intended to help a performer quickly learn new songs. / Used other than figuratively or idiomatically: see fake, book.

plural of book value

A drop safe that accepts books returned to a library.

plural of book drop

(idiomatic) The practice of donating old used books that burden rather than assist communities. / (literally) The discarding of quantities of books.

plural of airport book

Alternative form of logbook

Solidly and thoroughly booked; fully scheduled with no free breaks or space; unavailable.