v. t. To groove in; to join in or with a groove. Tennyson. [ 1913 Webster ]
v. t. See Engross. [ 1913 Webster ]
a. Growing or appearing to grow into some other substance. [ 1913 Webster ]
a. Having grown or appearing to grow into some other substance, especially a fingernail or toenail growing into the adjacent flesh. [ 1913 Webster +PJC ]
Ingrown toenail,
n. A growth or development inward. J. LeConte. [ 1913 Webster ]