During the beach cleanup, volunteers helped load abandoned four-wheelers onto trailers to be properly disposed of.

In special relativity, four-vectors combine time and spatial components into a single geometric object.

In our simulation, we compared the trajectories by analyzing the four-accelerations of each particle under different gravitational potentials.

Our number four steadied the innings with a calm half-century when wickets fell early.

In evolutionary psychology, the concept of the four F's summarizes the basic drives of feeding, fighting, fleeing, and fucking.

The last four will battle tomorrow for a spot in the final.

The shop displayed several four-in-hands in the window, attracting passing collectors.

The four-eyed creature blinked twice as it watched the sunrise.

After dinner, she offered a colorful petit four that everyone admired before taking a bite.

The engineer designed a sturdy four-wheeled rover for exploring uneven terrain.