godan verb (-su), transitive verb
let dry; kill (vegetation); season (lumber)
Transitive verb meaning to cause plants, wood, or other organic matter to dry out, wither, or die. Also used for seasoning lumber by drying it.
水やりを忘れて、花を枯らしてしまった。
I forgot to water the flowers and ended up letting them wither.
この木材
This lumber needs to be thoroughly seasoned before use.