弹簧 (tánhuáng): spring (coiled metal)

Measure Word

一根弹簧 gēn

这个弹簧失去了弹性。

Zhège tánhuáng shīqù le tánxìng.

This spring has lost its elasticity.

床垫里有很多弹簧。

Chuángdiàn lǐ yǒu hěnduō tánhuáng.

There are many springs inside the mattress.

memory

弹 (bounce/spring) + 簧 (reed of an instrument) = a coiled spring. Think of the bouncy 弹 character doing the springing.

弹 dàn

簧 huáng