red-breasted merganser, Mergus serrator
['hammerhead, hammerhead shark', 'Irish water spaniel', 'African crocodile, Nile crocodile, Crocodylus niloticus', "dragonfly, darning needle, devil's darning needle, sewing needle, snake feeder, snake doctor, mosquito hawk, skeeter hawk", 'maillot', 'otter', 'rule, ruler']