ingrown
/ˈɪngrəʊn/adjective
1- growing or having grown within a thing; innate内在的; 先天的, 天生的：
as Greek instinct or ingrown habit would have dictated.
就像希腊人的本能或者内在习惯会要求的那样。
1.1
- (of a toenail) having grown into the flesh（脚趾甲）长入肉里的。
1.2
- preoccupied with oneself; inward-looking专注于自我的; 关注内部的：
direct mail is a clubby, ingrown world in which everybody knows everybody.
直邮广告是个排外的、只关注内部的世界, 那里人人相熟。
1.3
- Geology (of an incised meander) asymmetric in cross section due to lateral erosion【地质】（深切曲流）（由侧面冲蚀引起的）横截面不对称的, 内生的。