"Stercolith" Natural Recordings by Native Speakers
A stercolith (noun) is a hard piece or mass of dung that has become fossilized or petrified, often found in geological formations. It is formed when dung is buried quickly in an anaerobic environment, preventing the decay process, and then over time, minerals from the surrounding rock seep in and replace the organic material, turning the dung into a stone-like substance.
The word "stepson" refers to a man or boy who is the child of one's spouse from a previous marriage or relationship, but not the teacher's own biological child. It can also mean the child of one's spouse after they have divorced or separated from a previous relationship.