RhymeZone: heeler definitions

Definitions of heeler:

noun: A gamecock that strikes well with its heels or spurs.
noun: A quick runner.
noun: A dog that readily comes to heel.
noun: (US, slang, politics, dated) A dependent and subservient hanger-on of a political patron.
noun: The rodeo performer who ropes the steer by its hind feet after the header has turned it.

(Definitions from Wiktionary)