A short, loud, high cry, especially one produced suddenly as an expression of a powerful emotion. (Cambridge Dictionary)
To utter a sharp shrill sound. (Merriam – Webster)
To cry out in a high-pitched voice: Screech. (Merriam – Webster)
Utter a high-pitched piercing sound or words, especially as an expression of terror, pain, or excitement. (Oxford Dictionaries)
(of something inanimate) make a high-pitched screeching sound. (Oxford Dictionaries)
Be very obvious or strikingly discordant. (Oxford Dictionaries)
When someone shrieks, they make a short, very loud cry, for examples because they are suddenly surprised, are in pain or are laughing. (Collins Dictionary)
Other words for shriek.
Shriek, Your Dictionary.