bridgetree

From bridge +‎ tree.

bridgetree (plural bridgetrees)

1. The beam that supports the spindle socket of the runner in a grinding mill.

• Edward H[enry] Knight (1877) “Bridgetree”, in Knight’s American Mechanical Dictionary. […], volumes I (A–GAS), New York, N.Y.: Hurd and Houghton […], →OCLC.
• “bridgetree”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.