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A concrete-filled steel cylinder used as a supporting member in a building.
[Lally, Originally a trademark (after John Lally, 19th-century American inventor) + column.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.