Suru verb - special class, Transitive verb
to eat
Formal or literary term
人類は太古の昔から指を用いて食べ物を食してきたのである。People have eaten with their fingers from the beginning of history. Suru verb - special class, Intransitive verb
to become eclipsed (of an astronomical object)
Also written 蝕する【しょくする】