Dark-haired or little dark one
Kierah is a modern phonetic spelling of the Irish name Ciara. It is derived from the Gaelic word 'ciar', which means black or dark, historically referring to someone with dark hair or a dark complexion.
Less common today
Kierah isn't in the latest US Top 1000. It last peaked at #5,385 in 2005.
US births per 5-year period, 1990βpresent (SSA data).