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hotbox

or hot box

[hot-boks]
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noun Railroads.
  1. a journal box overheated by excessive friction of an axle as a result of inadequate lubrication or the presence of foreign matter.

Origin of hotbox

First recorded in 1835–45; hot + box1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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