A more thorough explanation:

Definition: Contraband refers to items that are illegal to trade, carry, produce, or otherwise have in one's possession. Contraband may be goods that are illegal to import or export and are attempted to be smuggled into a country, or items that are banned from a facility. Contraband items are subject to seizure by officials.

Examples:

• Illegal drugs, such as cocaine or heroin, are considered contraband and are illegal to possess or sell.
• Weapons, such as firearms or explosives, may be considered contraband if they are illegal to possess or carry without a permit.
• Unauthorized electronic devices, such as cell phones or laptops, may be considered contraband in certain facilities, such as prisons or military bases.

The examples illustrate how contraband can refer to a variety of items that are illegal or prohibited. Illegal drugs and weapons are commonly known as contraband, but other items, such as electronic devices, can also be considered contraband in certain contexts. In all cases, possession of contraband can result in legal consequences, such as fines or imprisonment.