Overview
In Irish mythology, Dian Cécht (Old Irish pronunciation ; also known as Cainte or Canta) was the god of healing, the healer for the Tuatha Dé Danann, and son of the Dagda according to the Dindsenchas.
He was the father of Cu, Cethen and Cian. His other children were Miach, Airmed, Étan the poet and Ochtriullach (Octriuil). Through Cian, he is also Lugh's paternal grandfather.
Etymology
The name Dian Cecht may be a combination of the Old Irish common words dían 'swift' and cécht, glossed as 'power', hence the literal meaning may be literally "swift power". The refers to him as the "god of power", with cécht glossed as "power".
In Old Irish, there is also the word cécht meaning 'plough-beam' (or less accurately 'ploughshare'), but this makes "little sense in the light of his activities", and this lexical meaning is "presumably not relevant".
From Wikipedia (CC BY-SA 4.0).