shu1
hinge; pivot

strokes 15
radical
strokes after radical 11
户枢不蠹 戶樞不蠹 hu4 shu1 bu4 du4
lit. a door hinge never becomes worm-eaten; constant activity prevents decay (idiom)

交通枢纽 交通樞紐 jiao1 tong1 shu1 niu3
traffic hub

灵枢经 靈樞經 ling2 shu1 jing1
the Divine Pivot or Spiritual Pivot, ancient Chinese medical text

流水不腐,户枢不蠹 流水不腐,戶樞不蠹 liu2 shui3 bu4 fu3 - hu4 shu1 bu4 du4
Flowing water does not rot, nor a door-hinge rust (idiom); constant activity prevents decay

枢机 樞機 shu1 ji1
cardinal (Catholicism)

枢机主教 樞機主教 shu1 ji1 zhu3 jiao4
cardinal (of Catholic church)

枢密院 樞密院 shu1 mi4 yuan4
privy council

枢纽 樞紐 shu1 niu3
hub (e.g. of traffic network); hinge; pivot; fulcrum

枢垣 樞垣 shu1 yuan2
censorate

枢轴 樞軸 shu1 zhou2
pivot; fulcrum

天枢 天樞 tian1 shu1
alpha Ursae Majoris

天枢星 天樞星 tian1 shu1 xing1
alpha Ursae Majoris in the Big Dipper

要枢 要樞 yao4 shu1
important traffic hub; key crossroad

中枢 中樞 zhong1 shu1
center; backbone; hub (e.g. of transport network); the central administration

中枢神经系统 中樞神經系統 zhong1 shu1 shen2 jing1 xi4 tong3
central nervous system, CNS