masc acc pl of ra (letter); masc loc sg of ra (letter)
Etymology. An exclamation, likely of onomatopoetic or expressive origin; cognate with Latin re- (used in addressing, as in "re, amice") and English "eh". The root sense is one of calling out or turning attention toward someone.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
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