What does mentor mean in Greek mythology?

In Greek mythology, Mentor is a character in Homer's "Odyssey." He is a wise and trusted friend of Odysseus, who is entrusted with the care and education of Odysseus's son, Telemachus, while Odysseus is away. The term "mentor" has since evolved to refer to a guide or teacher, reflecting the qualities of wisdom and support exemplified by Mentor in the myth.