Crossword puzzle clue "greenskeeper's gizmo"

that which supplies with air; esp. an apparatus used for charging mineral waters with gas and in making soda water

AERATE, to put air into

AERATOR, that which supplies with air; esp. an apparatus used for charging mineral waters with gas and in making soda water

a tool used to trim lawn borders

HOLE, to make a cavity in

to cut down a crop

one that mows

the act of mowing