air lance meaning

[Architecture]

A rod-shaped device for directing a high-velocity stream of compressed air; used to clean away debris from a surface.

• air-lance:    [Engineering]"To d ...
• lance:    Noun: lance & ...
• break a lance with:    To enter into a co ...

Examples

1. The earth to be sucked out may be loosened first with a compressed-air lance, or a powerful water jet.
2. Typically, vacuum excavation loosens the soil with a blunt-nosed high pressure air lance or water source and immediately vacuums away loosened material.