arrastrar

arrastrar
ah-rrah-strahr'
to drag, to pull; to sweep away
Examples
1. El cangrejito se agarró de la roca para que las olas no lo arrastraran.
The little crab clung to the rock so the waves wouldn't sweep it away.
 
2. No arrastres así tu mochila o se va a ensuciar.
Don't drag your backpack like that or it will get dirty.