ADJECTIVE (2)

1. serving or tending to provoke, excite, or stimulate; stimulating discussion or exciting controversy;
- Example: "a provocative remark"
- Example: "a provocative smile"
- Example: "provocative Irish tunes which...compel the hearers to dance"- Anthony Trollope

2. exciting sexual desire;
- Example: "her gestures and postures became more wanton and provocative"

The Collaborative International Dictionary of English v.0.48:

Provocative \Pro*vo"ca*tive\, a. [L. provocativus: cf. OF.
   provocatif.]
   Serving or tending to provoke, excite, or stimulate;
   exciting.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Provocative \Pro*vo"ca*tive\, n.
   Anything that is provocative; a stimulant; as, a provocative
   of appetite.
   [1913 Webster]

WordNet (r) 3.0 (2006):

provocative
    adj 1: serving or tending to provoke, excite, or stimulate;
           stimulating discussion or exciting controversy; "a
           provocative remark"; "a provocative smile"; "provocative
           Irish tunes which...compel the hearers to dance"- Anthony
           Trollope [ant: unprovocative, unprovoking]
    2: exciting sexual desire; "her gestures and postures became
       more wanton and provocative"