From Longman Dictionary of Contemporary Englishldoce_274_apuffinpuf‧fin /ˈpʌfɪn/ noun [countable] 
HBAa North Atlantic seabird with a black and white body and a large brightly coloured beak
HBAa North Atlantic seabird with a black and white body and a large brightly coloured beakExamples from the Corpus
puffin• The first time i spotted a puffin I thought I was seeing things.• In September and November, sand-eels, the only things eaten by puffins, lay their eggs.• A two-hour boat trip will take you to Lundy Island, once famous for its pirates and now for its puffins.• Sure enough, we soon come up to a party of puffin and a single guillemot.• A party of puffins had to take evasive action as they nearly flew into the side of the ship.• Never before have I seen puffins that are so red, so yellow, so black.• The hon. Lady also quoted the use of the puffin symbol by Gallaher.• If that happens as normal, then the puffins have a better chance of survival.PuffinPuffin trademark a type of paperback book for children and young people, produced by the same company that produces Penguin booksOrigin puffin (1300-1400) Perhaps from puff, from the idea of the young ones being "puffed up" in shape 