扣

QR扣

q r kòu

(Tw) (loanword) QR code

扣眼

kòu yǎn

buttonhole

扣子

kòu zi

button

扣眼儿

kòu yǎn r

erhua variant of 釦眼|扣眼[kou4 yan3]

钮扣

niǔ kòu

variant of 紐扣|纽扣[niu3 kou4]

钩扣

gōu kòu

hook

门扣

mén kòu

door latch

预扣

yù kòu

to withhold

领扣

lǐng kòu

collar button

黏扣带

nián kòu dài

velcro (Tw)

七折八扣

qī zhé bā kòu

lit. various cuts and deductions (idiom)

不折不扣

bù zhé bù kòu

a hundred percent