He desired, 'Let a second body be born of me,' and he (Death or Hunger) embraced Speech in his mind. Then the seed became the year. Before that time there was no year. Speech bore him so long as a year, and after that time sent him forth. Then when he was born, he (Death) opened his mouth, as if to swallow him. He cried Bhan! and that became speech.
In plain words: Death wanted a second body, so in his mind he joined with Speech, and from this the year was born. When the newborn year came out, Death opened his mouth to swallow it, and the child cried 'Bhan!', which became speech.