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Definition of girder noun from the Oxford Advanced Learner's Dictionary

girder

noun
 
/ˈɡɜːdə(r)/
 
/ˈɡɜːrdər/
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  1. a long strong iron or steel bar used for building bridges and the framework of large buildings
    • It was a confusing picture of pipes and girders.
    • The unfinished building with its blue girders was being used as a huge climbing frame.
    Topics Buildingsc2
    Word Originearly 17th cent.: from gird in the archaic sense ‘brace, strengthen’.
See girder in the Oxford Advanced American Dictionary
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