Children die for religion

[InnerBrat]

Yes it is. It means "regardless."

ir·re·gard·less ( P ) Pronunciation Key (r-gärdls)
adv. Nonstandard
Regardless.

That word, "nonstandard," means NOT A WORD. They are oblighed to put in the dictionary BECAUSE it is not a word, so people who need to look it up when reading the ramblings of people who errantly use it can SEE that it's not a word. It's a bastardization, not a word.

Edit: That definition came from Dictionary.com

Edit: Dictionary.com also had this to say:

Usage Note: Irregardless is a word that many mistakenly believe to be correct usage in formal style, when in fact it is used chiefly in nonstandard speech or casual writing. Coined in the United States in the early 20th century, it has met with a blizzard of condemnation for being an improper yoking of irrespective and regardless and for the logical absurdity of combining the negative ir- prefix and -less suffix in a single term. Although one might reasonably argue that it is no different from words with redundant affixes like debone and unravel, it has been considered a blunder for decades and will probably continue to be so.

Dictionaries do not define language, they must keep up to date with it. As stupid as a word might be (irregardless is clearly a double negative, and it ain't in my dictionary) - if it's in regular use, it's a word.