- a chest or strongbox for keeping money or valuables
- [pl.] a treasury; funds
- a decorative sunken panel as in a vault, dome, etc.
- a cofferdam
- a lock in a canal
Origin of cofferMiddle English from Old French cofre, a chest from Classical Latin cophinus: see coffin
- to enclose in a coffer or chest
- to furnish with decorative sunken panels