maternal

Short definition from Wiktionary

Adjective

1. 1
   Of or pertaining to a mother; having the characteristics of a mother; motherly.
2. 2
   Related through the mother, or her side of the family.
3. 3
   Derived from the mother as opposed to the foetus during pregnancy.

Noun

1. 1
   A mother.
2. 2
   A person related through the mother, or her side of the family; a maternal relative.