expression, ichidan verb
support one's family; provide for one's family
Refers to being the breadwinner or main provider for one's household. Often used when someone takes on the financial responsibility for the family.
彼は若い頃から一家を支えてきた。
He has supported his family since he was young.
一家を支えるために、彼女は
She couldn't quit her job because she had to support her family.