ingrown

Grown abnormally into the flesh.

Innate or inveterate.

Having the attention focused inward; having little exchange with others; insular.

Grown from within; innate: as, “Art with Language lived ingrown,”

Grown inward: as, an ingrown nail.

Having grown or appearing to grow into some other substance, especially a fingernail or toenail growing into the adjacent flesh.

a toenail whose edges have becoming imbedded in the adjacent flesh.

That has grown inwards or abnormally towards (part of the body)

growing abnormally into the flesh