Definition of hot box in English:

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hot box

noun

1(In a railroad vehicle) an overheated axle box or journal box.
Example sentences
  • Things they would watch for included smoke or fire from a hot box (wheel journal), shifted loads, and dragging equipment, evidenced by signs of freshly damaged ties etc. as seen from a rearward look.
  • At 6: 09 PM, I heard a defect detector at milepost 165.1 say that it found a hot box.
  • A hot box detector went off about 10 miles from Alpine.
2 another term for sweatbox (sense 1).
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