thumb index

• Serie de muescas o recortes redondeados en el borde de las páginas de un libro, generalmente marcados con letras o secciones, que permiten al lector encontrar rápidamente una parte del libro usando el pulgar.

A series of rounded cutouts or notches along the edge of a book's pages, typically labeled with letters or sections, allowing the reader to quickly locate a specific part of the book by using their thumb.

1. Book featureB2formal

   A series of notches or cut-out tabs on the edges of a book's pages, usually marked with letters or symbols, to help quickly find a specific section.

   Índice de cortes (en libros)

   • The dictionary has a thumb index for each letter of the alphabet.
   • I prefer books with a thumb index for easy reference.
   • The thumb index made it simple to locate the chapter on grammar.