The Collaborative International Dictionary of English v.0.48:

License \Li"cense\ (l[imac]"sens), v. t. [imp. & p. p.
   Licensed (l[imac]"senst); p. pr. & vb. n. Licensing.]
   To permit or authorize by license; to give license to; as, to
   license a man to preach. --Milton. --Shak.

   Syn: licence, certify. [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Licensed \Li"censed\ (l[imac]"senst), a.
   Having a license; permitted or authorized by license; as, a
   licensed victualer; a licensed traffic.

   Syn: accredited, commissioned, licenced.
        [1913 Webster]

   Licensed victualer, one who has a license to keep an inn or
      eating house; esp., a victualer who has a license to sell
      intoxicating liquors.
      [1913 Webster]

WordNet (r) 3.0 (2006):

licensed
    adj 1: given official approval to act; "an accredited college";
           "commissioned broker"; "licensed pharmacist"; "authorized
           representative" [syn: accredited, commissioned,
           licensed, licenced]

Moby Thesaurus II by Grady Ward, 1.0:

25 Moby Thesaurus words for "licensed":
   authorized, chartered, empowered, enfranchised, entitled, excepted,
   excused, exempt, exempted, favored, franchised, immune,
   irresponsible, let off, patented, permitted, privileged, released,
   sanctioned, spared, unaccountable, unanswerable, unliable,
   unsubject, warranted