What is "velouria"

"Velouria" is a song by the American alternative rock band Pixies, written and sung by the band's frontman Black Francis. "Velouria" is featured on their album Bossanova, was the first single to be released from it and was the band's first UK Top 40 hit. The song features extensive use of theremin. It featured on the influential 1990 Madchester compilation album Happy Daze.