A puffin is a black and white seabird with a large, brightly-coloured beak.
puffin in British English
(ˈpʌfɪn)
noun
any of various northern diving birds of the family Alcidae (auks, etc), esp Fratercula arctica (common or Atlantic puffin), having a black-and-white plumage and a brightly coloured vertically flattened bill: order Charadriiformes
Word origin
C14: perhaps of Cornish origin
puffin in American English
(ˈpʌfɪn)
noun
any of various northern alcidine shorebirds (esp. genus Fratercula) black above and white below, with a short neck, ducklike body, and a large, brightly colored, triangular beak
Word origin
ME poffin < ? assoc. by folk etym. with puff, because of the enormous beak or blown-up appearance of the young