adj.
Pronunciation: ˌ ə m- ' bi-li-k ə l, Brit also ˌ ə m-b ə - ' l ī -k ə l
Function: adjective
Date: 1541
1 : of, relating to, or used at the navel
2 : of or relating to the central region of the abdomen
3 : being a necessary or nurturing link or connection <the town's umbilical rail line>