IPA: /ˈɪnɡroʊn/
KK: /ˈɪnˌɡroʊn/
Describing something that has grown into the flesh or inward instead of outward, often causing discomfort or problems, like a toenail that grows into the skin.
She had to see a doctor because of her painful ingrown toenail.
Ingrown → It is formed from "in-" (meaning in or into) and "grown" (from the past participle of "grow", meaning to develop or increase). The word "ingrown" describes something that has grown into the surrounding tissue, often used in medical contexts such as ingrown toenails.
Think of something that has grown "into" ("in-") its surroundings — that's why ingrown refers to something that has developed inward.