A consuetudinary sign is a mark or symbol used in heraldry to distinguish different branches or regions within a family or organization. It typically features a unique design that is recognized as a traditional emblem associated with a particular group.

George William Kitchin has written:

'The life of Pope Pius II' -- subject(s): Libreria Piccolomini

'Winchester' -- subject(s): History

'A Consuetudinary of the Fourteenth Century for the Refectory of the House of S. Swithun in ..'

'Overcome evil with good' -- subject(s): South African War, 1899-1902, Religious aspects, English Sermons, Religious aspects of South African War, 1899-1902

'Cause she wanted a book-book, book book, book-book, boook, book-book....

You can 'book' a reservation.

The contraction for "book is" is book's. Example: The book is very long.= The book's very long.