1) Ball pen 2) Biro 3) Pen 4) Pens 1) Ballpen 2) Ballpoint pen 3) Bic product 4) Biro 5) Felt tip 6) Felt-tip alternative 7) Fountain pen 8) Good time to indicate writer 9) Highlighter 10) Kind of pen 11) Marker 12) Paper mate product 13) Pen type 14) Type of pen 15) Writing implement 
[n] - a pen that has a small metal ball as the point of transfer of ink to paper
ballpoint pen noun a pen that has a small metal ball as the point of transfer of ink to paper