“Eureka” comes from the Ancient Greek word εὕρηκα heúrēka, meaning “I have found (it)”, which is the first person singular perfect indicative active of the verb εὑρίσκω heurískō “I find”. It is closely related to heuristic, which refers to experience-based techniques for problem-solving, learning, and discovery.
Not if you live in north west California, then it’s just a town name.
Isn’t it latin for ‘fetch me my towel’?
According to Wikipedia