airship, dirigible
["plunger, plumber's helper", 'black swan, Cygnus atratus', 'banjo', 'platypus, duckbill, duckbilled platypus, duck-billed platypus, Ornithorhynchus anatinus', 'coil, spiral, volute, whorl, helix', 'plastic bag', 'solar dish, solar collector, solar furnace']