cut down
(to reduce or lessen something)
- We have to cut down on expenses.
- You should cut down on coffee and cigarettes.
- She is trying to cut down on fatty foods.
- My doctor advised me to cut down on my working hours.
(to make a tree fall to the ground by cutting it at the base)
- The lumberjack used a chainsaw to cut down the tree.
- They cut down the trees and cut them up for firewood.