SHARPEN
Meaning of SHARPEN in English
— sharpener , n.
/shahr"peuhn/ , v.t. , v.i.
to make or become sharp or sharper.
[ 1400-50; late ME; see SHARP, -EN 1 ]
Random House Webster's Unabridged English dictionary.
Полный английский словарь Вебстер - Random House .
2012