Meaning

2 senses
  1. The eye of a one-eyed creature.

  2. A humanlike monster girl with a single large eye.

Origin

From mono- + eye. The monster girl type sense is possibly a reborrowing from Japanese モノアイ

From mono- + eye. The monster girl type sense is possibly a reborrowing from Japanese モノアイ (monoai) or a calque of Japanese 単眼 (tangan).

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monoeye — meaning, examples, forms, synonyms | Krumeto