Kastanonas (, before 1927: ÃÂÃÂñóìÃÂù, Dragari; ) is an Aromanian village and a community of the Zagori municipality. Before the 2011 local government reform it was part of the municipality of East Zagori, of which it was a municipal district. The 2021 census recorded 15 inhabitants in the village. The community of Kastanonas covers an area of 9.551 km<sup>2</sup>.
Apart from Dragari, the placename is also mentioned with the form Dragai. Linguist Kostas Oikonomou writes the form Dragai is derived from the form Dragari with anominal deletion of r. The toponym has two possible derivations. The first from the Slavic dragarÃÂ meaning 'Dervendjis, the one who controls the road or the passage' from draga and stemming from old Slavic dorga 'the road, the passage, the valley' and the suffix -arÃÂ. The second from the Slavic dragarÃÂ meaning 'beloved' from dragÃÂ and stemming from old Slavic dorgÃÂ and the suffix -arÃÂ. In suffix forms with -arÃÂ, formed nouns denote the one who has or deals with what is referred to in the subject of the name.
The population of Kastanonas are hellenised Aromanians. In 1820, Greek migrants from Demati settled in the village and contributed to the hellenisation of the Aromanian population. The Aromanian language is no longer spoken in the village following a period of assimilation.
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