harvester, reaper
['breakwater, groin, groyne, mole, bulwark, seawall, jetty', 'drilling platform, offshore rig', 'spaghetti squash', 'cash machine, cash dispenser, automated teller machine, automatic teller machine, automated teller, automatic teller, ATM', 'steel drum', 'vacuum, vacuum cleaner', 'artichoke, globe artichoke']