The Collaborative International Dictionary of English v.0.48:

Settee \Set*tee"\, n. [From Set; cf. Settle a seat.]
   A long seat with a back, -- made to accommodate several
   persons at once.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Settee \Set*tee"\, n. [F. sc['e]tie, scitie.] (Naut.)
   A vessel with a very long, sharp prow, carrying two or three
   masts with lateen sails, -- used in the Mediterranean.
   [Written also setee.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

settee
    n 1: a long wooden bench with a back [syn: settle, settee]
    2: a small sofa