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单词 touchhole
释义

WordReference Random House Unabridged Dictionary of American English © 2024
touch•hole  (tuchhōl′),USA pronunciation n. 
  1. the vent in the breech of an early firearm or cannon through which the charge was ignited. See diag. under flintlock.
  • touch + hole 1495–1505

Collins Concise English Dictionary © HarperCollins Publishers::
touchhole /ˈtʌtʃˌhəʊl/ n
  1. a hole in the breech of early cannon and firearms through which the charge was ignited
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