Yes, Aslan does die in The Chronicles of Narnia: The Lion, the Witch and the Wardrobe. In the story, Aslan sacrifices himself on the Stone Table to save Edmund, who had betrayed his siblings and fallen into the hands of the White Witch.
Aslan’s death is a pivotal moment in the narrative. It symbolizes self-sacrifice and redemption. The Witch believes she has triumphed by killing Aslan, as she thinks it fulfills the Deep Magic of Narnia, which states that if a traitor is to be killed, the rightful emperor can be punished. However, Aslan’s death is not the end of his story; he rises from the dead, demonstrating his power over death and fulfilling a deeper magic that even the Witch is unaware of.
This event is rich with allegorical meaning, often interpreted as a representation of themes of sacrifice, resurrection, and the ultimate triumph of good over evil.