Definitions of turkey:

noun: large gallinaceous bird with fan-shaped tail; widely domesticated for food
noun: an event that fails badly or is totally ineffectual
Example: "The first experiment was a real turkey"
noun: flesh of large domesticated fowl usually roasted
noun: a Eurasian republic in Asia Minor and the Balkans; achieved independence from the Ottoman Empire in 1923
noun: a person who does something thoughtless or annoying
noun: wild turkey of Central America and northern South America