'Polluted' in the Bible

Yet let us send them written instructions to abstain from things polluted by connexion with idolatry, from fornication, from meat killed by strangling, and from blood.

But all believers do not recognize these facts. Some, from force of habit in relation to the idol, even now eat idol sacrifices as such, and their consciences, being but weak, are polluted.

To the pure everything is pure; but to the polluted and unbelieving nothing is pure, but on the contrary their very minds and consciences are polluted.

and especially those who are abandoned to sensuality--craving, as they do, for polluted things, and scorning control. Fool-hardy and self-willed, they do not tremble when speaking evil of glorious beings;

But as for cowards and the unfaithful, and the polluted, and murderers, fornicators, and those who practise magic or worship idols, and all liars--the portion allotted to them shall be in the Lake which burns with fire and sulphur. This is the Second Death."