What is the meaning of Duende?

A small, mischievous humanoid creature in Iberian (Spanish/Portuguese), Latin American, and Philippine folklore/mythology; an imp.

Heightened inspiration or passion, especially in flamenco.

Personal charm. (Can we add an example for this sense?)

present participle of due

a small humanoid creature who invades homes at night to carry out mischief and scare the residents

any small fictional humanoid, especially a mischievous or evil one

a small humanoid creature who invades homes at night to carry out mischief and scare the residents

goblin, leprechaun, pixie, elf, imp, brownie, gremlin, hobgoblin

charisma (the power to attract through personal magnetism and charm)

charm, magic

Source: wiktionary.org