1
person upon whom one relies
1
suffix · counter
columna;poste
1
pillar;post
この橋は１０本の柱で支えられている。
The bridge is supported by 10 posts.
2
support;prop;mainstay
海外向け食品の輸出は農業関連産業の柱の一つです。
Overseas food exports are one of the mainstays of agribusiness.
3
suffix · counter
counter for buddhas, gods, nobles, etc.
1
Hashira
1
bridge (of a koto, etc.)
2
only applies to
ちゅう
cylinder;prism
1
fret (of a biwa)
1
Kotoji
1
Mihashira