Quick answer
Cormac is a boy name.
Meaning and history
From Old Irish Cormacc or Corbmac, of uncertain meaning, possibly from corb "chariot, wagon" or corbbad "defilement, corruption" combined with macc "son". This is the name of several characters from Irish legend, including the semi-legendary high king Cormac mac Airt who supposedly ruled in the 3rd century, during the adventures of the hero Fionn mac Cumhaill. This name was also borne by a few early saints.
Notes and context
Usage: irish mythology, irish