Dwarf is used to describe varieties or species of plants and animals which are much smaller than the usual size for their kind.

In children's stories, a dwarf is an imaginary creature that is like a small man. Dwarfs often have magical powers.

In former times, people who were much smaller than normal were called dwarves.

If one person or thing is dwarfed by another, the second is so much bigger than the first that it makes them look very small.