[sharp.en] vb sharp.ened ; sharp.en.ing vt (15c): to make sharp or sharper; esp: hone ~ vi: to become sharp or sharper -- sharp.en.er n
SHARPEN
Meaning of SHARPEN in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012
[sharp.en] vb sharp.ened ; sharp.en.ing vt (15c): to make sharp or sharper; esp: hone ~ vi: to become sharp or sharper -- sharp.en.er n
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012