Source : Webster's Revised Unabridged Dictionary (1913)

Jacobaean lily \Jac`o*b[ae]"an lil"y\ [See {Jacobean}.] (Bot.)
   A bulbous plant ({Amaryllis, or Sprekelia, formosissima})
   from Mexico. It bears a single, large, deep, red, lilylike
   flower. [Written also {Jacobean}.]

Jacobean \Ja*co"be*an\ (?; 277), Jacobian \Ja*co"bi*an\, a.
   [From L. Jacobus James. See 2d {Jack}.]
   Of or pertaining to a style of architecture and decoration in
   the time of James the First, of England. ``A Jacobean
   table.'' --C. L. Eastlake.

Source : WordNet®

Jacobean
     adj : of or relating to James I or his reign or times; "Jacobean
           writers"

Jacobean
     n : any distinguished personage during the reign of James I