*one* flight (6)
I believe the answer is:
stairs
This could be a double definition.
'one' is the first definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.
'flight' is the second definition.
(I've seen this before)
Can you help me to learn more?
(Other definitions for stairs that I've seen before include "Series of steps" , "A flight of indoor steps" , "Means of ascent/descent" , "Way between floors" , "Access consisting of steps" .)