deadly poison; virulent poison
Refers to a poison that is extremely potent or lethal. Often used in contexts like venomous creatures, toxic substances, or metaphorical danger.
This snake has a deadly poison.
そのキノコには猛毒があるので、絶対に食べてはいけない。
That mushroom contains a deadly poison, so you must never eat it.
golden poison frog; golden dart frog
Compound of 猛 (もう, 'fierce, intense') and 毒 (どく, 'poison'). The combination straightforwardly yields 'intense poison'.