1. A tree common in the forests of the Eastern Archipelago, the secretions of which are poisonous, and the exhalations of which were said to be fatal to all vegetable and animal life in the neighbourhood.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• ypas,
• hpas,
• jpas,
• 8pas,
• 7pas,
• uoas,
• u-as,
• u0as,
• upzs,
• upws,
• upqs,
• upaa,
• upaz,
• upax,
• upad,
• upae,
• upaw,
• yupas,
• uypas,
• uhpas

The plural of the "Upas" can be the "upases".

The singular of the "Upas" can be the "Upas".