/ˈtrɛsəl/ or /ˈtrɛsəl/ (noun: /ˈtrɛsl/)

Definitions

1. noun

A horizontal beam or bar, typically of wood or metal, that supports or forms part of a roof or a structure.

“The tressel supported the weight of the heavy roof tiles.”

2. verb

To support or hold up (something) with a beam or bar.

“The carpenter tresselled the roof with sturdy wooden beams.”