This term is referred to the items that may endanger the safety of an aircraft or passengers on board the aircraft. These items are also known as restricted articles, hazardous materials and dangerous cargo. Many household items may come under the ambit of dangerous goods for the purpose of air travel. The International Civil Aviation Organization (ICAO) or the local Civil Aviation Authority Regulations govern their carriage onboard aircraft.
To get an idea about what kind of items you can carry with your luggage please visit IATA’s Passenger Dangerous Goods Corner https://www.iata.org/whatwedo/cargo/dgr/Pages/dgr-guidance.aspx .
The International Air Transport Association (IATA) is an association for world’s airlines, representing approximately 290 airlines or 82% of total air traffic. A prohibited list of items is maintained by them which can be viewed here https://www.iata.org/whatwedo/cargo/dgr/Documents/DGR-60-EN-2.3a.pdf for your reference.
For any queries related to Dangerous Goods please contact your relevant airline carrier or visit IATA official website for further reference https://www.iata.org/pages/default.aspx .