Definition of teasers:
(n) :
(marketing) A preview or part of a product released in preparation of its main advertising, typically a short film, song, or quote.
(n) :
(television, video) 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.
(n) :
One who teases or pokes fun.
(n) :
One who excites a person sexually without fulfilment.
(n) :
(textiles) A person or thing that teases.
(n) :
(fishing) A lure, especially one without a hook, used to attract fish to another lure or lures.