The word originates from the Anglo-Saxon term, "crack" meaning fun.
It possibly dates back as far as Old English or the older Scots dialect and is still used today by Ulster-Scots in Northern Ireland.
Borrowed by the Gaelic Irish and spelt "craic", the term has been picked up by UK journalists in recent years and has re-entered the use of the word (Hiberno-English) in mainland UK.
Dublin journalists in the 1970s frequently spelt the word as "crack" in written articles.
What's the crack?
Aye it was good crack!
To crack a joke
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