tub, vat
['ballpoint, ballpoint pen, ballpen, Biro', 'bobsled, bobsleigh, bob', 'platypus, duckbill, duckbilled platypus, duck-billed platypus, Ornithorhynchus anatinus', 'fire screen, fireguard', 'spotlight, spot', 'guillotine', 'nematode, nematode worm, roundworm']