"People using a word out of context does not change the meaning of the word" - I absolutely disagree, at least when ENOUGH people use the word out of its original context. That is precisely how the meanings of words change over time.
You and I both constantly use words that have drifted from their original meanings. The third word you use, "entitle", is an example!
(Of course, a small number of incorrect usages don't add up to a change in meaning.)
This is not some eccentric or extremist view I have, it's a pretty mainstream view that I suspect you would find most scholars of language - including lexicographers - share.
There are no "official" meanings to words (perhaps with the exception of some technical scientific, legal, etc.) words; the origin of a word does not define its meaning; and Urban Dictionary, while an entertaining site, is hardly an authoritative source of anything!