四重 is read as しじゅう (shijuu) and means fourfold.
しじゅう
shijuu
しじゅうそう
instrumental quartet
しじゅうしょう
vocal quartet
しじゅうきん
four grave prohibitions (killing, theft, adultery, and deceit)
よんじゅうく
four-fold hardship
げんがくしじゅうそうだん
string quartet
げんがくしじゅうそう
よも
four sides (of a square)
よつぎり
photograph size 254mm x 305 mm
しで
hornbeam (deciduous tree in the birch family)
しじゅうはって
every trick in the book
しぶん
divide into four pieces
しこくちほう
Shikoku region (incl. Tokushima, Kagawa, Ehime and Kochi prefectures)