A dwarf is an extremely short person.
You might hear people talking about dwarfs in fantasy movies or books. For example, in a story like J.R.R. Tolkien's "The Hobbit," there are these small human-like creatures called dwarfs who live in mountains and go on adventures. They're usually shorter than average humans. The word dwarf can also refer to something that's extremely short in comparison to other things of its kind. So, if a tree is considered a dwarf tree because it only grows a few feet tall, you know why they gave it that name.
Any member of a race of beings from (especially Scandinavian and other Germanic) folklore, usually depicted as having some sort of supernatural powers and being skilled in crafting and metalworking, often as short with long beards, and sometimes as clashing with elves.
