bittern
['quill, quill pen', 'worm fence, snake fence, snake-rail fence, Virginia fence', 'African crocodile, Nile crocodile, Crocodylus niloticus', 'tick', 'chime, bell, gong', 'rule, ruler', 'platypus, duckbill, duckbilled platypus, duck-billed platypus, Ornithorhynchus anatinus']