single-handedly (of a man raising children); on one's own; as a single father
Fixed expression used when a man raises children alone, often followed by 育てる. Implies doing it without a partner's help.
See also: 女手一つで
He raised three children single-handedly as a father.
男手一つで家事も仕事もこなしている。
He manages both housework and his job on his own as a single father.
Standard kanji-kana mixed spelling.
Variant with ひとつ in kana; equally natural.
Compound of 男手 (man's hand/labor) + 一つ (one) + で (by means of), literally 'with one man's hand'.