Halter

A halter (US) or headcollar (UK) (occasionally headstall) consists of a noseband and headstall that buckles around the horse's head and allows the horse to be led or tied. The lead rope is separate, and it may be short (from six to ten feet, two to three meters) for everyday leading and tying, or much longer (up to 25 feet (7.6 m), eight meters) for tasks such as for leading packhorses or for picketing a horse out to graze.
Some horses, particularly stallions, may have a chain attached to the lead rope and placed over the nose or under the jaw to increase the control provided by a halter while being led. Most of the time, horses are not ridden with a halter, as it offers insufficient precision and control. Halters have no bit.
In Australian and British English, a halter is a rope with a spliced running loop around the nose and another over the poll, used mainly for unbroken horses or for cattle. The lead rope cannot be removed from the halter. A show halter is made from rolled leather and the lead attaches to form the chinpiece of the noseband. These halters are not suitable for paddock usage or in loose stalls. An underhalter is a lightweight halter or headcollar which is made with only one small buckle, and can be worn under a bridle for tethering a horse without untacking.