noun, verb · the back of a body or object

这把椅子的背很硬。

verb · to carry on the back or shoulder

他背着一个沉重的大书包。

verb · to be burdened with something such as debt, blame, or responsibility

他因为赌博背了一身债。

verb · to learn by heart or recite from memory

我正在背课文。

verb · to hide something from someone

他做人一向坦荡，从不背人做亏心事。

verb · to turn one's back

他背对着门坐着。

adjective · hard of hearing or partially deaf

老人的耳朵有点背。

adjective · unlucky or unfortunate (slang)

今天运气真背，出门就下雨。