bookmark (also bookmarker)

n strip placed betweenthe pages of a book to mark the reader's place 书签.

booby prize (also wooden spoon), booby trap, booby-trap, boodle, boogie, book, book club, book token, book-end, book-keeper, book-plate, bookable, bookbinder [C], bookbinding [U], bookcase, bookie, booking, bookish, bookishness, bookkeeper [C], bookkeeping [U], booklet, bookmobile, books, bookseller, bookshelf, bookshop (US also bookstore), bookstall, bookstore, bookworm, boom, boom town, boomerang, booming, boon, boor, boorish, boorishly, boorishness, boost, booster, boot,