Tükenmez kaleminiz var mı? - Do you have a ballpoint pen?
Tükenmez kalemle yazar mısınız lütfen? - Won't you please write with a ballpoint pen?
English - English
Definition of ballpoint-pen in English English dictionary
A pen, similar in size and shape to a pencil, having an internal chamber filled with a viscous, quick-drying ink that is dispensed at the tip during use by the rolling action of a metal sphere (around 0.7 mm to 1 mm in diameter)
pen which has a small rotating metal ball at its point to control the flow of ink