男手一つで
Meanings
1
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.
He manages both housework and his job on his own as a single father.