DJ : Short for dust jacket, a protective and often decorative wrapper, usually made of paper which wraps around the binding of a book.

tight : Used to mean that the binding of a book has not been overly loosened by frequent use.

As New : "the book is in the same immaculate condition in which it was published. There can be no defects, no missing pages, no library stamps, etc., and the dust jacket (if it was issued with one) must be perfect without any tears." Condition definition from AB Bookman's Weekly.

Cloth : Generally refers to a hardcover with cloth covering the outside of the book covers.

As New/Fine : "the book is in the same immaculate condition in which it was published. There can be no defects, no missing pages, no library stamps, etc., with a dust jacket that approaches the condition of As New, but without being crisp. For the use of the term Fine there must also be no defects, etc., and if the jacket has a small tear, or other defect, or looks worn, this should be noted." Condition definition from AB Bookman's Weekly.