Blackline

"Blackline" in a Sentence (2 examples)

A second squad uses drip torches to begin burning a 15- to 20-foot barrier or “blackline” inside the wetline.

The helicopter is used to burn blacklines when the relative humidity is above 50%, temperature is below 50 degrees F, and wind speed is less than 6 mph.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.