Halter (noun)

1. A rope or strap with a headpiece used to lead or tie up an animal, typically a horse or cow.
2. A woman's top, typically sleeveless, fastened behind the neck and leaving the back and arms uncovered.

Origin:

Middle english haldier, from old english healdere, from holdan to hold.

Examples:

1. She put a halter on the horse and led it out of the stable.
2. The cow was tied to the fence with a halter.
3. She wore a red halter top to the party.
4. A halter dress is a dress that is held up by straps around the neck.
5. The model was wearing a black halter bikini on the runway.