breast down
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
To use a process of sequential drilling and blasting in building tunnels for mining, subways, etc.
Register: dated
Where it’s used:
Used
American English
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “breast down” mean?
To use a process of sequential drilling and blasting in building tunnels for mining, subways, etc.
Is “breast down” formal or informal?
breast down is generally dated.