an indication of something that will happen in the future, often used as a literary device to hint at or allude to future plot developments: The gothic novel uses foreshadowing to build suspense.

Is foreshadowing a noun verb or adjective?

foreshadow verb - Definition, pictures, pronunciation and usage notes | Oxford Advanced Learner's Dictionary at OxfordLearnersDictionaries.com.

Is foreshadow a noun?

A literary device whereby an author drops subtle hints about plot developments to come later in the story.