Source : Webster's Revised Unabridged Dictionary (1913)

Spellbind \Spell"bind`\, v. t. [imp. & p. p. {Spellbound}; p.
   pr. & vb. n. {Spellbinding}.]
   To bind or hold by, or as if by, a spell or charm; to
   fascinate, esp. by eloquence of speech, as in a political
   campaign. -- {Spell"bind`er}, n.

Source : WordNet®

spellbinding
     adj : attracting and holding interest as if by a spell; "read the
           bedtime story in a hypnotic voice"; "she had a warm
           mesmeric charm"; "the sheer force of his presence was
           mesmerizing"; "a spellbinding description of life in
           ancient Rome" [syn: {hypnotic}, {mesmeric}, {mesmerizing}]