Ground plane ready for boarding here? (4)
I believe the answer is:
gate
This might be a double definition.
'ground' is the first definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps you can see an association between them that I don't see?
'plane ready for boarding here?' is the second definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.
Can you help me to learn more?
(Other definitions for gate that I've seen before include "Field entrance" , "Narrow opening" , "Entrance (money)" , "Movable opening" , "Number attending" .)