I was recently introduced to the term I'rab (الإعراب) al-Qur'an, and told it was one of the sciences of the Qur'an.
Now me, I love sciences of the Qur'an as much as anybody else (hey, who doesn't), but this was a new one for me. Google searching was inconclusive; the closest thing to a clear definition I could find was on this site, where it is described thus:
I’raab is to state the type of the word (naw’ul kalimah), its hukm (ruling) and its ‘alaamah (its sign).
Concise, but I still can't quite wrap my head around exactly what it is. Is it just a catch-all for any form of lexical and/or grammatical analysis as applied to the Qur'an, or does it have a more particular meaning?
So the question lies, from the perspective of a layman, what exactly is I'rabul Qur'an?