hi·lum 
(hīləm)
(hīləm)n. pl. hi·la (-lə)
1.
a. The scar on a seed, such as a bean, indicating the point of attachment to the funiculus.
b. The nucleus of a starch grain.
2. The area through which ducts, nerves, or blood vessels enter and leave a gland or organ.
[Latin hīlum, trifle.]
hilar (-lər) adj.