书本儿

書本兒
shūběnr
  1. (Mandarin) Erhua form of 書本／书本 (shūběn, “book”).
  2. Erhua form of 書本／书本 (shūběn, “book”).

Wiktionary

Entry Composition

1 书本 shūběn book (chiefly used to refer to a plurality of books or books in general)
=2 儿 ér
  1. child
  2. son
=2 儿 r
  1. non-syllabic diminutive suffix
  2. retroflex final