Crossword puzzle clue "greenskeeper's concern"

HOLE, to make a cavity in

AERATE, to put air into

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

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

to cut down a crop

one that mows