mower; reaper
Refers to a person who cuts grass or crops, or a machine that does so. The word is straightforward and neutral.
刈り手が田んぼの稲を刈っている。
The reaper is cutting the rice in the paddy.
新しい芝刈り
The mower of the new lawnmower is very quiet.
Compound of 刈り (kari, 'cutting', the continuative form of 刈る karu) and 手 (te, 'hand; person'), literally 'cutting hand/person'.