trail in something
trail on something
trail over something

Her hair was trailing over the remains of a chicken.

She trailed a finger over the back of his hand.

The Nets trailed by 15-2 just over five minutes into the game.

Spit continued to trail over the side of her cheek.

This last was a thin voice trailing over the wind.

He trailed a finger over the back of her hand.

He's getting older and he should be spending more time with his family instead of trailing along behind you all over the world.

Her hand reached out, trailing over the muscles in his back.

This he read through carefully and then let it trail over the rail, from his hand so that all could see.

He trailed his hand in the water over the side of the boat.