Adjective for saying that certain distance below ground
level is suitable for subways or other
underground transport. This word is commonly used by those who don't have a
basic understanding of the English language.
"How far down do you reckon this subway station should
go?"
"Um,
well, it needs to
deep enough that we can actually run some sufficient, kind of, subways under there"
"That's right. It needs to be subwayic