break glass

Smash the pane

Break glass describes emergency measures meant to be used only when normal procedures fail, from the instruction on fire alarm cases: break glass in case of emergency.

A break-glass procedure bypasses standard protocols when urgent action is needed.

The phrase often modifies nouns: break-glass access, break-glass account.

In tech and security contexts, it grants emergency system access that's normally restricted.

Related

fire · hammer · fragments · flying shards · sharp · splinter · window · mirror · crystal · transparent · brittle · fracture · crash · tinkle · shards · safety · axe · escape

Categories
Opposites
physical action on material

break glasshandle with care

Instruction for delicate items

preserve · cushion · safeguard · shield · bubble wrap

emergency protocol

break glassbusiness as usual

Continuation of normal routine

stay the course · wait and see · hold off · stand down

destructive vs. protective action toward glass

break glassglaze

Thin lustrous coating

Family

break, glass, breaks, broke, broken, breaking, breaker, breakable, unbreakable

Familiarity
Top 200,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Everyday, not technical · Rated G