half track
['radio telescope, radio reflector', 'backpack, back pack, knapsack, packsack, rucksack, haversack', 'seat belt, seatbelt', 'loudspeaker, speaker, speaker unit, loudspeaker system, speaker system', 'magnetic compass', 'wreck', 'cash machine, cash dispenser, automated teller machine, automatic teller machine, automated teller, automatic teller, ATM']