It means that it rolls, that it rotates, that it spins. In cycling slang, the rider who rides fast, who has great background. In botany it is a plant harmful to livestock, similar to thyme. It is also called barrilla, charolera or almajo. It grows in saline soils and its scientific name is Salsola kali. It belongs to the family Amaranthaceae.
* Only one "like" per meaning and day, the more "likes" the meaning will appear higher in the list