A fisherman who uses a hook and line

In slang, a troll is a person who posts or makes inflammatory, insincere, digressive, extraneous, or off-topic messages online or in real life, with the intent of provoking others into displaying emotional responses, or manipulating others' perception, thus acting as a bully or a provocateur.

Trollinger, Schiava, or Vernatsch, is a red German/Italian wine grape variety that was likely first originally cultivated in the wine regions of South Tyrol and Trentino, but today is almost exclusively cultivated on steep, sunny locations in the Württemberg wine region of Baden-Württemberg.