tulip

Tulip comes from Middle French tulipe, from earlier tulipan, borrowed from Ottoman Turkish tülbent/dülbent meaning "cheesecloth," which itself came from Classical Persian dulband, "turban."

The word started out naming a piece of cloth wound into headwear, but by the time it reached French and then English, it had shifted entirely to name the flower, likely because the bloom's shape recalled a wrapped turban.

Tulip is a doublet of turban — both trace back to the same Persian word for headwear, just arriving in English by different routes.