扣眼

扣眼	kòu yǎn	buttonhole
扣	kòu	to fasten / to button / button / buckle / knot / to arrest / to confiscate / to deduct (money) / discount / to knock / to smash, spike or dunk (a ball) / to cover (with a bowl etc) / (fig.) to tag a label on sb / (Tw) (loanword) code
扣	kòu	button
眼	yǎn	eye (CL:只,双) / (often used with 一) a look; a glance / small hole / (bound form) salient point / classifier for wells, cave-dwellings etc