The Collaborative International Dictionary of English v.0.48:

Roseate \Ro"se*ate\, a. [Cf. L. roseus, rosatus, prepared from
   roses. See Roseal, Rose.]
   1. Full of roses; rosy; as, roseate bowers.
      [1913 Webster]

   2. resembling a rose in color or fragrance; esp., tinged with
      rose color; blooming; as, roseate beauty; her roseate
      lips.
      [1913 Webster]

   Roseate tern (Zool.), an American and European tern
      (Sterna Dougalli) whose breast is roseate in the
      breeding season.
      [1913 Webster]

WordNet (r) 3.0 (2006):

roseate
    adj 1: of something having a dusty purplish pink color; "the
           roseate glow of dawn" [syn: rose, roseate,
           rosaceous]