プログレッシブ和英中辞典(第4版)の解説
しちゅう【支柱】
&fRoman1;〔柱〕a prop
２本の丸太を支柱にして塀を支えた
The wall was propped up by two logs.
&fRoman2;〔支えとなる人〕a support; a prop; a mainstay
彼は一家の支柱だ
He is the 「chief support [mainstay] of the family.
一家の支柱を失った
The family has lost its breadwinner.
精神的支柱だ
She's my emotional prop [《文》 stay].