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.
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   2. resembling a rose in color or fragrance; esp., tinged with
      rose color; blooming; as, roseate beauty; her roseate
      lips.
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   Roseate tern (Zool.), an American and European tern
      (Sterna Dougalli) whose breast is roseate in the
      breeding season.
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