Meaning & use
girder
A large, strong beam, usually of steel, used as a main support in building or bridge construction.
See it in a sentence
Workers welded the steel girder into place high above the river.
Rust had weakened one girder, so engineers ordered the bridge closed for repairs.
A note on using this word
Girder specifically refers to a horizontal load-bearing beam, unlike a vertical column or post.
Words with a similar meaning
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Make it your own
Write a sentence using “girder”, then compare your use with the examples above.