Wordnet 3.0
NOUN (1)
1. 
 any distinguished personage during the reign of James I; 
ADJECTIVE (1)
1. 
 of or relating to James I or his reign or times; 
- Example: "Jacobean writers"
The Collaborative International Dictionary of English v.0.48:
Jacobean \Jacobean\ n.
   any distinguished personage during the reign of James I of
   England.
   [WordNet 1.5]
The Collaborative International Dictionary of English v.0.48:
Jacobaean lily \Jac`o*b[ae]"an lil"y\ [See Jacobean.] (Bot.)
   A bulbous plant (Amaryllis formosissima syn. Sprekelia
   formosissima) from Mexico. It bears a single, large, deep,
   red, lilylike flower. [Written also Jacobean.] Jacobean
The Collaborative International Dictionary of English v.0.48:
Jacobean \Ja*co"be*an\ (?; 277), Jacobian \Ja*co"bi*an\, a.
   [From L. Jacobus James. See 2d Jack.]
   Of or pertaining to James the First, of England, or of his
   reign or times; especially, pertaining to a style of
   architecture and decoration popular in the time of James I.;
   as, Jacobean writers. "A Jacobean table." --C. L. Eastlake.
   [1913 Webster + WordNet 1.5]
WordNet (r) 3.0 (2006):
Jacobean
    adj 1: of or relating to James I or his reign or times;
           "Jacobean writers"
    n 1: any distinguished personage during the reign of James I