regulator box
noun
A box-shaped regulator; specifically one which controls the flow of air to an engine, furnace, etc.
Origin
Late 18th century.
- Untermensch
- Untermeyer, Louis
- untestable
- untested
- untether
- unthanked
- unthankful
- unthankfully
- unthankfulness
- unthaw
- untheorised
- untheorized
- unthinkability
- unthinkable
- unthinkableness
- unthinkably
- unthinking
- unthinkingly
- unthinkingness
- unthought
- unthoughtful
- unthread
- unthreatened
- unthreatening
- unthriftily