The crossword solutions for the term PUFFIN KIN are AUK, which is a three-letter word. AUK is a common name for any of several species of small to medium-sized seabirds in the family Alcidae. They are found in the northern hemisphere, with some species living as far south as the tropics. Puffins are one of the most recognizable species of AUK, and they are known for their colorful beaks and webbed feet.