The Collaborative International Dictionary of English v.0.48:
Urbane \Ur*bane"\, a. [See Urban.] Courteous in manners; polite; refined; elegant. [1913 Webster]WordNet (r) 3.0 (2006):
urbane adj 1: showing a high degree of refinement and the assurance that comes from wide social experience; "his polished manner"; "maintained an urbane tone in his letters" [syn: polished, refined, svelte, urbane]