单词	breechblock
释义	breechblock noun breech·​block ˈbrēch-ˌbläk  : the block in breech-loading firearms that closes the rear of the barrel against the force of the charge and prevents gases from escaping Example Sentences Recent Examples on the Web The lower receiver in Roh's case does not have a bolt or breechblock and is not threaded to receive the barrel, Nicolaysen noted. Scott Glover, CNN, 11 Oct. 2019 The definition is found instead in the Code of Federal Regulations:That part of a firearm which provides housing for the hammer, bolt or breechblock, and firing mechanism, and which is usually threaded at its forward portion to receive the barrel. Robert Verbruggen, National Review, 18 Oct. 2019 Word History First Known Use 1855, in the meaning defined above
随便看	accidentalness accidentalnesses accidentals accidentary accidented accidentia accidently accidentology accidents accidia accidiae accidias accidie accidies accinge accinged accinges accinging accipiter accipiteres accipiters accipitral Accipitres accipitrid Accipitridae

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