dual : (nt.) duka; dvika; yugala; dvanda. (adj.) duvidha; dvikayutta.

A.P. Buddhadatta Mahathera, Concise Pali-English and English-Pali Dictionary [available as digital version from Metta Net, Sri Lanka]

gnyis

[translation-san] {MSA} dvaya

[translation-san] {MSA} dvi

[translation-san] {C} ubhaya

[translation-san] {C} ubhi (=ubhaya)

[translation-eng] {Hopkins} two

[translation-eng] {C} dual; duality; both

Jeffrey Hopkins' Tibetan-Sanskrit-English Dictionary

gnyis po

[translation-san] {MSA,MV} dvaya

[translation-eng] {Hopkins} second; two; dual; {T} both (?)

Jeffrey Hopkins' Tibetan-Sanskrit-English Dictionary

gnyis su

[translation-san] {C} dvaya

[translation-san] {C} dvayatā

[translation-eng] {Hopkins} as two; dual; duality

Jeffrey Hopkins' Tibetan-Sanskrit-English Dictionary