Dictionary.net

• A nozzle capable of turning completely round in a horizontal plane and having a limited play in a vertical plane, used in hydraulic mining, fire-extinguishing apparatus, etc.

2010 - New Age Dictionary Database
By Oddity Software

• A nozzle capable of turning completely round in a horizontal plane and having a limited play in a vertical plane, used in hydraulic mining, fire-extinguishing apparatus, etc.

1913 - Webster's Revised Unabridged Dictionary
By Noah Webster.