Riddle: I have four wings, but cannot fly, I never laugh and never cry; On the same spot I’m always found, toiling away with little sound. What am I?
Machines with large propellers working with wind power and set up to generate energy are called windmills. The wings mentioned in the riddle are the propellers of the windmill. Because the windmill is not a living creature, it cannot fly, laugh or cry.
The location of the windmills is fixed, they always stay in the same place. The propellers of the windmill move as the wind blows, this is why it toils away with little sound. All this explains why the windmill is the answer of this riddle.
The answer of this riddle is a windmill.