choke collar
noun1
A dog's collar which tightens itself so as to choke the dog, when it pulls the leash. Used especially for training.
- When Timothy and Julia hurried up the staircase to the bedroom floor, where a considerable commotion was taking place, Tim took Barry Leach with him.[…]. The captive made no resistance and came not only quietly but in a series of eager little rushes like a timid dog on a choke chain.1963, Margery Allingham, chapter 19, in The China Governess: A Mystery, London: Chatto & Windus, →OCLC: