The Collaborative International Dictionary of English v.0.48:

Charter \Char"ter\, v. t. [imp. & p. p. Chartered; p. pr. &
   vb. n. Chartering.]
   1. To establish by charter.
      [1913 Webster]

   2. To hire or let by charter, as a ship. See Charter party,
      under Charter, n.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Chartered \Char"tered\, a.
   1. Granted or established by charter; having, or existing
      under, a charter; having a privilege by charter.
      [1913 Webster]

            The sufficiency of chartered rights.  --Palfrey.
      [1913 Webster]

            The air, a chartered libertine.       --Shak.
      [1913 Webster]

   2. Hired or let by charter, as a ship.
      [1913 Webster]

WordNet (r) 3.0 (2006):

chartered
    adj 1: hired for the exclusive temporary use of a group of
           travelers; "a chartered plane"; "the chartered buses
           arrived on time" [syn: chartered, hired, leased]
           [ant: unchartered]