cocker

The word 'cocker' originates from the Old English term cocc, an onomatopoeic word for a rooster, reflecting the sound the bird makes. The agent suffix -er was appended to create a noun meaning "one who deals with cocks," specifically referring to a person who breeds or trains gamecocks for fighting. This primary sense later extended by analogy to a breed of dog (the cocker spaniel), originally bred to flush woodcock, a type of game bird. The verb sense, meaning to pamper, evolved in the 19th century from the idea of indulging or "fussing over" someone as one might a prized fighting cock or a pet dog.

Structure: cock (male bird) + er (agent suffix) - cock: From Old English cocc, meaning "male bird," especially a rooster. Its ultimate origin is onomatopoeic, imitating the bird's cry. - er: A Germanic agent suffix from Old English -ere, used to form nouns denoting a person or thing associated with an action or object.