UPSTROKE
Meaning of UPSTROKE in English
/up"strohk'/ , n.
an upward stroke, esp. of a pen or pencil, or of a piston in a vertical cylinder.
[ 1820-30; UP- + STROKE 1 ]
Random House Webster's Unabridged English dictionary.
Полный английский словарь Вебстер - Random House .
2012