خاصة

Etymology 1
From the root. Sense 5 is used in the Shi'ite vernacular and derives from the people that were closer to the Shi'ite's Imams (their "private" (people)), as opposed to the general public.

Noun

 * 1) private possession
 * 2) property, characteristic
 * 3) essence, nature
 * 4) leading personalities, elite, the upper class
 * 5)  people close to Ahl al-Bayt and the Shi'ite Imams, i.e. the Shia

Etymology 2
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Adverb

 * 1) especially, particularly, in particular

Etymology
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Adverb

 * 1) especially, mainly