Fire-killed.
CFR · 2024-01-01 · US · Title 7
Any leaf of which 5 percent or more of its surface has a set green color caused by excessive heat in the curing process. Any lot containing 5 percent or more of such tobacco may be described as fire-killed. (See Rule 23.)
official document · source cfr-2024 · id 7:§ 29.1018