fossil.
1. adj. He said the substance of organic origin more or less set in stone, found in ground layers by natural causes. U t. c. s. m.
2. adj. Said of printing, remnant, or mold that denotes the existence of agencies that are not of the current geological epoch. U t. c. s. m.
3. adj. Colloq. Old, outdated.
4. m. Colloq. Méx. Behind student.
Esus. Mineral or rock of any kind.? V.