Schwarzes im Auge

Etymology
lit. 'black in the eye'. The use for the pupil and the iris as a whole could be based on the contrast to the white of the sclera. However, if it were a loan translation of 🇨🇬, it could also be due to the stark prevalence of dark-coloured eyes in most parts of the Mediterranean.

Noun

 * 1)  the pupil
 * 2)  the not white parts of the eye; the pupil and the iris
 * 1)  the not white parts of the eye; the pupil and the iris