adj. That has grown inwards or abnormally towards (part of the body)
the GNU version of the Collaborative International Dictionary of English
adj. Having grown or appearing to grow into some other substance, especially a fingernail or toenail growing into the adjacent flesh.
The Century Dictionary and Cyclopedia
Grown from within; innate: as, “Art with Language lived ingrown,”
Grown inward: as, an ingrown nail.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. growing abnormally into the flesh
Word Usage
"Truth, purity, firmness, love to Jesus, all that belongs to a formal conversion and more, is centralized thus in the soul, as a kind of ingrown habit."