Poison.

A Dictionary of Chinese Buddhist Terms, William Edward Soothill and Lewis Hodous

dug

[translation-san] {C,MSA} viṣa

[translation-eng] {Hopkins} poison

Jeffrey Hopkins' Tibetan-Sanskrit-English Dictionary

gdug

[translation-san] viṣa

[translation-san] {C} āśīviṣa

[translation-san] {MSA} praduṣṭa

[translation-eng] {Hopkins} poison; misery See: dug, poison

[translation-eng] {C} viper; resemblence to a poisonous snake

[comments] Doesn't gdugs of ex. 3 meaning umbrella or parasol?? {T}

Jeffrey Hopkins' Tibetan-Sanskrit-English Dictionary