プログレッシブ和英中辞典(第4版)の解説
ぼせい【母性】
motherhood
あの人には母性の自覚がない
She has no sense of responsibility as a mother.
母性愛
motherly love
母性保護
the protection of mothers [(the state of) motherhood]
母性本能
(a) maternal instinct
母性本能がそうさせた
She acted on maternal instinct.