Here are the possible solutions for opera house level clue
Answer
Clue
Relevancy
mezzanine
Clue
Opera house level
Definition
a low storey between two main storeys of a building, generally between the ground floor and the first floor
tier
Clue
Opera house level
Opera-house level
Management level or theater level
ozone
Clue
Low-level pollution or high-level protection
Definition
an allotropic form of oxygen present in the atmosphere
ptomaineconcourse
Clue
Warning sign at a train station's food court? (NOTE: The original sign, without my additions, actually exists. It's in Grand Central Terminal in NYC, on the lower level — the food court level. The sig
rank
Clue
Class, level or class level
Definition
disagreeable in odour or taste
dramas
Clue
"House" and "Little House ...," but not "Full House"
