kōu zì yǎn r
erhua variant of 摳字眼|抠字眼[kou1 zi4 yan3]
抠
kōu
to dig; to pick; to scratch (with a finger or sth pointed)
字
zì
letter
眼
yǎn
eye (CL:隻|只[zhi1],雙|双[shuang1])
儿
r
non-syllabic diminutive suffix
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