thick book cover; book with thick binding
Refers to the physical cover of a book when it is thick, or to a book that has such a cover. Often used in contexts like bookbinding or describing a sturdy volume.
This dictionary has a thick cover.
Books with thick binding last a long time.
Compound of 厚 (あつ, 'thick') and 表紙 (ひょうし, 'book cover'). The reading びょうし is a rendaku form of ひょうし.