the.com/apple of the eye

The pupil, so named because ancient eyes assumed it was a solid little fruit.

means Someone or something cherished above all else — your most precious, protected favorite.

from From Old English 'æppel' used for any round object, not just the fruit — ancient anatomists believed the pupil was a solid round ball, like a tiny apple lodged in the eye. Because the pupil is so vital and vulnerable, 'apple of the eye' came to mean something guarded with the same care you'd give your own sight — something you absolutely could not afford to lose.

origin
from old english aeppel, meaning pupil, not fruit
anatomy fail
pupil is actually a hole, not an object
biblical use
deuteronomy calls it something fiercely protected
modern drift
now means any person you treasure most
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