The Collaborative International Dictionary of English v.0.48:
Nobless \No*bless"\, Noblesse \No*blesse"\ (?; 277), n. [F. noblesse. See Noble.] 1. Dignity; greatness; noble birth or condition. [Obs.] --Chaucer. --Spenser. --B. Jonson. [1913 Webster] 2. The nobility; persons of noble rank collectively, including males and females. --Dryden. [1913 Webster]