背心

sleeveless garment (vest, waistcoat, singlet, tank top etc) / CL:件[jian4]

variant of 背[bei1]

to be burdened / to carry on the back or shoulder

the back of a body or object / to turn one's back / to hide something from / to learn by heart / to recite from memory / unlucky (slang) / hard of hearing

heart / mind / intention / center / core / CL:顆|颗[ke1],個|个[ge4]

tank top / sleeveless undershirt

BCD / Buoyancy Compensation Device (diving)

camisole (women's garment)