suǒ​yuè

lock and key

Senses

锁钥/ 鎖鑰 suǒ​yuè (also suǒ​yào) lock and key

locks and keys collectively

锁钥/ 鎖鑰 suǒ​yuè (also suǒ​yào) strategic location

a strategic gateway or mountain pass of military importance

锁钥/ 鎖鑰 suǒ​yuè (also suǒ​yào) key

the crucial point or key to solving a problem

References

classifier 锁钥/鎖鑰 把/把