'Trestlework' definitions:

Definition of 'trestlework'

noun

A supporting structure composed of a system of connected trestles; for a bridge or pier or scaffold e.g.

From: GCIDE

Trestlework \Tres"tle*work`\, n. A viaduct, pier, scaffold, or the like, resting on trestles connected together. [1913 Webster]