sort floor books question

[salsah]

does anyone know what this means:

"This is an unread book with poor DJ."

i saw it in the description of the condition of a book that i am interested in.

i'm sure it is obvious but i''m drawing a blank -- what is "DJ"?

tia

[greatcanuk]

Dustjacket?

[LBW]

The book is new, but the dust jacket is beat up. (The dust jacket is the printed paper cover they put over some hardcovers.)

[salsah]

yes, of course! thank you.