noun

• (music, dance) A form of lively flamenco music and dance that has many regional variations (e.g. fandango de Huelva), some of which have their own names (e.g. malagueña, granadina).
  "The soldiers were oftener gambling and dancing beneath the walls than keeping watch upon the battlements, and nothing was heard from morning till night but the noisy contests of cards and dice, mingled with the sound of the bolero or fandango, the drowsy strumming of the guitar, and the rattling of the castanets, while often the whole was interrupted by the loud brawl and fierce and bloody contest."
• (figurative, colloquial) An unknown entity or contraption.
  "What’s that fandango you’re using?"
• (euphemistic) Vagina.
  "So, what? She strangled her and stuck a broken bottle up her... fandango?"

verb

• (dance) To dance the fandango.
• (figuratively) To dance, particularly with a lot of energy.