The Collaborative International Dictionary of English v.0.48:
Dearn \Dearn\, a. [AS. derne, dyrne, dierne, hidden, secret. Cf. Derne.] Secret; lonely; solitary; dreadful. [Obs.] --Shak. -- Dearn"ly, adv. [Obs.] --Chaucer. [1913 Webster]The Collaborative International Dictionary of English v.0.48:
Dearn \Dearn\, v. t. Same as Darn. [Obs.] [1913 Webster]