air level
English
editNoun
editair level (plural air levels)
- (dated) A spirit level.
- Used other than figuratively or idiomatically: see air, level.
- When diving, take care to monitor not just your air level, but that of your partner.
References
edit- “air level”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.