Focus on the pronunciation of poison
English definition of “poison”
/ˈpɔɪ·zən/ n [C/U] (SUBSTANCE)
› a substance that causes illness or death if swallowed, absorbed, or breathed into the body: [U] poison gas [C] Some cleaning products are poisons. [U] He sprayed the weeds with poison. poisonous
/ˈpɔɪ·zə·nəs/ adj › The mushrooms they picked were poisonous.