| 释义 |
blackfire
\ˈ ̷ ̷ˌ ̷ ̷\ noun
: a disease of tobacco caused by a bacterium (Pseudomonas angulata) and characterized by angular leaf spots without a surrounding halo that are at first dark green but become zonate and turn grayish, tan, or dark brown and may drop out leaving ragged holes — compare wildfire |