What does the word bias mean?

Usage examples for bias

  1. Their knowledge is not perfect; their judgment is not infallible, nor are their official decisions always pure and free from bias. – Monopolies and the People by D. C. Cloud
  2. We are, I think, on surer ground when, admitting a national bias towards material benevolence, and not denying some stimulus from literature and philosophy, we assign the main credit of our social regeneration to the Evangelical revival. – Collections and Recollections by George William Erskine Russell