mother figure(n = noun.person) - a woman who evokes the feelings usually reserved for a mother;
is a kind of adult female, woman

authority figure, den mother, earth mother, father figure, figure, figure eight, figure loom, figure of eight, figure of speech, figure out, figure skate, figure skating, foster mother, great mother, lay figure, mother, mother board, mother carey's chicken, mother carey's hen, mother cell, mother country, mother fucker, mother goose, mother hen, mother hubbard, mother jones, mother lode, mother of god, mother of thyme, mother seton, mother superior, mother teresa, mother theresa, mother tongue, mother wit, plane figure, public figure, queen mother, significant figure, solid figure, spore mother cell, stick figure, surrogate mother, terminal figure, three-dimensional figure, two-dimensional figure, wax figure