teaser

noun

1. One who teases or pokes fun.
2. A person or thing that teases.
3. A preview or part of a product released in preparation of its main advertising, typically a short film, song, or quote.
4. A brief portion of a television episode or video that is shown at the beginning, often before the main title sequence, meant to introduce the story and entice viewers to watch the rest of the episode.
5. (UK, dialectal)A kind of gull, the jaeger
6. A shunt winding on field magnets for maintaining their magnetism when the main circuit is open.
7. The stoker of a glassworks furnace.
8. A short horizontal curtain used to mask the flies and frame the top of the inner stage opening, adjustable to the desired height.
9. (UK)An assistant who accompanies the 'Obby 'Oss in the May Day festivities of Padstow, Cornwall.
10. One who excites a person or an animal (see gomer) sexually without fulfilment.

    “A whore keeps her promises. A teaser only promises.”

11. A lure, especially one without a hook, used to attract fish to another lure or lures.
12. A lure used in addition to a bucktail used for fluke fishing.