the.com/ballpoint pen

means A pen that uses a small rotating metal ball to feed thick, quick-drying ink from a cartridge onto paper.

from Patented in the late 1930s by Hungarian journalist László Bíró, who noticed that newspaper ink dried fast and smudge-free compared to fountain pen ink, and worked with his brother György, a chemist, to adapt it for everyday writing. The rolling ball metered the thicker ink evenly without the leaks and scratches that plagued fountain pens. The Bíró name stuck as a generic term for the pen in the UK and several other countries. The design was refined and mass-marketed through the mid-20th century, and the pen's low cost and reliability helped make it the everyday writing tool it is today.