allusion (noun)

1. The author's novel is full of magical creatures and mystical lands, making it a perfect allusion to the fantasy genre.

2. The director cleverly includes allusions to classic films in the background of certain scenes, providing an homage to the cinema.

3. The painting contains various allusions to famous works, such as a hidden Mona Lisa smile, showcasing the artist's love for art.

4. The professor made an allusion to the Battle of Waterloo to support her argument about the significance of strategic decisions in history.