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n. Southwestern US
A rafter or roofbeam, especially a trimmed and peeled tree trunk whose end projects from an outside adobe wall.
[American Spanish, from Spanish, perhaps from Latin bīga, team of horses, cart (from the long pole between the two horses); see yeug- in Indo-European roots.]
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.
(Architecture) Southwestern US a wooden rafter or beam of the roof
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014