mouse wheel

Noun

 * 1)  A hard plastic or rubbery disc on a computer mouse, rotated by the user in order to scroll the display.

Translations

 * Czech: skrolovací kolečko
 * Dutch:, scrollwieltje
 * Finnish: hiiren rulla
 * French: molette de souris
 * Galician: roda do rato
 * German: Mausrad, Scrollrad
 * Portuguese: roda do mouse,  roda do rato
 * Spanish: rueda del ratón