noun
prohibited item; banned substance
Refers to any object or substance that is officially forbidden, such as contraband, illegal drugs, or items not allowed in a specific area.
空港で禁止物を持っていると没収される。
If you carry prohibited items at the airport, they will be confiscated.
この競技では禁止物の使用が厳しくチェックされる。
In this sport, the use of banned substances is strictly checked.