numeral, dual genitive
Analysis. dvi (two) + -nnaṁ (dual genitive ending)
Etymology. From the root *dwei-, the Indo-European word for two, cognate with English two, German zwei, Latin duo, Sanskrit dvau. The same root appears in the Pali prefix vi- (originally 'apart', from the notion of 'two-ness').
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
Lite mode — plain HTML for e-readers and old browsers. Full version