The Collaborative International Dictionary of English v.0.48:

Canaanite \Ca"naan*ite\, n.
   1. A descendant of Canaan, the son of Ham, and grandson of
      Noah.
      [1913 Webster]

   2. A Native or inhabitant of the land of Canaan, esp. a
      member of any of the tribes who inhabited Canaan at the
      time of the exodus of the Israelites from Egypt.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Canaanite \Ca"naan*ite\, n. [From an Aramaic word signifying
   "zeal."]
   A zealot. "Simon the Canaanite." --Matt. x. 4.
   [1913 Webster]

   Note: This was the "Simon called Zelotes" (--Luke vi. 15),
         i.e., Simon the zealot. --Kitto.
         [1913 Webster]

WordNet (r) 3.0 (2006):

Canaanite
    n 1: a member of an ancient Semitic people who occupied Canaan
         before it was conquered by the Israelites
    2: the extinct language of the Semitic people who occupied
       Canaan before the Israelite conquest

Easton's 1897 Bible Dictionary:

Canaanite
   a name given to the apostle Simon (Matt. 10:4; Mark 3:18). The
   word here does not, however, mean a descendant of Canaan, but is
   a translation, or rather almost a transliteration, of the Syriac
   word Kanenyeh (R.V. rendered "Cananaen"), which designates the
   Jewish sect of the Zealots. Hence he is called elsewhere (Luke
   6:15) "Simon Zelotes;" i.e., Simon of the sect of the Zealots.
   (See SIMON.)