noun, noun which may take the genitive case particle 'no'
fourfold; quadruple
Used to describe something that is four-layered, four times as much, or consisting of four parts. Often appears in compounds like 四重奏 (quartet) or 四重の塔 (four-storied pagoda).
A four-storied pagoda is visible in the distance.
I went to listen to a quartet performance.
instrumental quartet
vocal quartet; four-part chorus
four grave prohibitions
string quartet (piece)
Compound of 四 (four) and 重 (layer, pile). The reading しじゅう is the on'yomi combination.