The origins of the name Orion are deeply entrenched in ancient Greek. Because of that, there is some ambiguity and discussion about what the name actually means. While there is a consensus that the name comes from the word oros, or mountain, there are also scholars who believe that the name comes from the ancient Greek word for urinating.
One piece of evidence for this suspicion is the birth process of the Greek mythological giant Orion. Zeus, Hermes, and Poseidon urinated on the hide of a bull they had been served in a feast and buried the hide. Later, when King Hyrieus dug up the hide, he found baby Orion.
While this origin story may feel unpleasant, rest assured that the name Orion is no longer synonymous with the Greek word for urinating.