ANR/ABF. ANR/ABF stands for: A Nursing Relationship/Adult Breast Feeding. ANR/ABF refers to a relationship involving sucking milk from the female breast as an expression of close intimacy.NR/ABF. ANR/ABF stands for: A Nursing Relationship/Adult Breast Feeding. ANR/ABF refers to a relationship involving sucking milk from the female breast as an expression of close intimacy.