backpack, back pack, knapsack, packsack, rucksack, haversack
['lab coat, laboratory coat', 'ballpoint, ballpoint pen, ballpen, Biro', 'barrow, garden cart, lawn cart, wheelbarrow', 'pick, plectrum, plectron', 'gas pump, gasoline pump, petrol pump, island dispenser', 'trolleybus, trolley coach, trackless trolley', 'oxygen mask']