Meaning of tie rod

tie' rod"

Pronunciation: [key]
  1. an iron or steel rod serving as a structural tie, esp. one keeping the lower ends of a roof truss, arch, etc., from spreading.
  2. a rod that serves as part of the linkage in the steering system.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.