The term "knight of the elbow" is a unique and peculiar phrase that refers to someone who is a skilled drinker or someone who enjoys drinking alcohol. While the phrase may sound obscure, there are actually quite a few synonyms that can be used to describe someone who fits this description. Words such as booze-hound, tippler, lush, drunkard, and alcoholic are all words that can be used to refer to someone who is particularly skilled at drinking or who enjoys alcohol. These words are a bit more common and well-known than "knight of the elbow," but they still carry the same connotation of someone who has spent a lot of time honing their drinking abilities.