A boomerang is a curved piece of wood used that was originally used by Australian Aborigines as a weapon or for sport. If you throw a boomerang right, it will travel around in a loop and come back to you. Other cultures outside of Australia have also developed boomerangs, but theirs do not return when you throw them.
Fangs are large, pointed teeth that meat-eating animals like dogs and cats have. Unlike tusks, fangs don't usually grow out of the animal's mouth.
A gang is a group of people. The term is most often used to describe a group of young people, or a group of people who are behaving badly or engaging in crime.
Something is hanging if it is attached to something at the top but can swing freely under it. You hang out laundry using pegs to attach them, and bats hang upside down by their feet when they sleep. If something is hanging very loosely and is wobbling around, it is usually called dangling.
Meringue is made from egg whites beaten with sugar until it becomes stiff. Meringue is then baked, which browns it a little. Meringue can be used by itself or as part of another dish, for example a lemon meringue pie.
Pyongyang is the capital of North Korea. It has a population of around 2.5 million people.