[1] : The Collaborative International Dictionary of English v.0.48

ballpoint \ballpoint\ n.
   a pen which has a small metal ball as point of transfer of
   ink to paper, at the tip of a cylandrical and non-refillable
   reservoir of ink; -- short for ballpoint pen.

   syn: ballpoint pen, ballpen, biro.
        wordnet 1.5
see also:
ballpoint pen 

[2] : WordNet (r) 2.0

ballpoint
     n : a pen that has a small metal ball as the point of transfer
         of ink to paper syn: ballpoint pen, ballpen, biro
see also:
ballpoint pen ballpen biro 

Ballpoint >> B Words
Ballpoint, definition of term: Ballpoint
ballpoint_pag1.html

Ballpoint Pen >> B Words
Ballpoint Pen, definition of term: Ballpoint Pen
ballpoint+pen_pag1.html