mower

image: Gardener pushing lawn mower, posed to illustrate Rudyard Kipling's poem The Glory of the Garden LCCN00651261 by Johnston, Frances Benjamin, 1864-1952, photographer · Public domain

M (3) + R (4): mower roars across the strip.

A red ride-on mower cutting a fairway at full throttle, the smell of hot grass and petrol. M is the muffled engine note, R is the roar as the blades bite.