greyhound

The word "greyhound" is a classic example of folk etymology, where its original meaning has been obscured by a more familiar modern word. It does not refer to the color grey. The first element likely derives from Old Norse grey, meaning "bitch", or an Old English cognate, making the original sense "bitch-hound" or simply "dog-hound". The second element is the common Germanic word for dog, from Proto-Indo-European ḱwṓ. Over time, the first part was reanalyzed as the color "grey", perhaps due to the breed's common coat color. Thus, the term evolved from a generic descriptor for a type of dog to the specific name for a swift hunting breed, with its literal components now misleadingly suggesting a "grey dog".

Structure: grey + hound grey: From Old English grīġ, of uncertain origin, possibly meaning "bitch" or "dog" in this compound. Its functional role is to specify a type of hound. hound: From Old English hund, meaning "dog". Its functional role is the core noun, indicating the animal.