noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A fire block.
2. 2
   Any multi-component system designed to stop fire and smoke from migrating through openings around piping, wiring, ductwork, cable trays, bus ducts, etc., as well as through movement joints in walls and floors that are required to have a fire-resistance rating.

Synonyms

All synonyms

draft stopdraft stop

Etymology

From fire + stop.

Related phrases

fire block

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.