The Collaborative International Dictionary of English v.0.48:

Editorial \Ed`i*to"ri*al\, a.
   Of or pertaining to an editor; written or sanctioned by an
   editor; as, editorial labors; editorial remarks.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Editorial \Ed`i*to"ri*al\, n.
   A leading article in a newspaper or magazine; an editorial
   article; an article published as an expression of the views
   of the editor.
   [1913 Webster]

WordNet (r) 3.0 (2006):

editorial
    adj 1: of or relating to an article stating opinions or giving
           perspectives; "editorial column"
    2: relating to or characteristic of an editor; "editorial
       duties"
    n 1: an article giving opinions or perspectives [syn: column,
         editorial, newspaper column]

Moby Thesaurus II by Grady Ward, 1.0:

52 Moby Thesaurus words for "editorial":
   allegorizing, analysis, annotative, article, clarifying, column,
   comment, commentary, commentation, critical, critical review,
   criticism, critique, demonstrative, demythologizing, elucidative,
   enlightening, essay, euhemeristic, exegetic, exemplificative,
   explaining, explanatory, explicative, explicatory, expositive,
   expository, gloss, glossarial, illuminating, illuminative,
   illustrative, journalese, journalistic, leader, leading article,
   magazinish, magaziny, newspaperish, newspapery, notice, periodical,
   rationalistic, rationalizing, remark, report, reportorial, review,
   running commentary, scholiastic, serial, write-up