Black gemstone; claw or fingernail
Aunyx is a modern creative spelling of Onyx, referring to the black silicate mineral chalcedony. The name ultimately derives from the Greek word for 'claw' or 'fingernail', so named because the mineral's color can resemble that of a fingernail.
About 12 boys were named Aunyx in 2025.
US births per 5-year period, 1990–present (SSA data).