coal shaft
noun
A shaft in a coal mine.
Origin
Early 18th century.
- time rate
- time-related
- time-release
- time-resolved
- time reversal
- time reversal invariance
- time reversal symmetry
- time-reverse
- time-reversed
- time-ridden
- timerity
- times
- down to the wire
- down town
- downtown
- downtowner
- downtrend
- downtrodden
- down trou
- downturn
- down under
- downvote
- downward
- downward dog
- downward-facing dog