noun
even number (unlucky in Onmyōdō); ying number
In Onmyōdō numerology, even numbers are considered yin and unlucky. The literal translation 'ying number' is a direct rendering of the concept.
陰陽道では、陰数は不吉とされる。
In Onmyōdō, even numbers are considered unlucky.
陰数にあたる日は、祝い事を避ける風習があった。
There was a custom of avoiding celebrations on days that fell on even numbers.