Definitions

1. adjective

relating to or resembling wood, especially in being hard and woody

“The ligneous texture of the tree trunk caught the artist’s eye.”

2. noun

a ligneous plant, especially a woody one

“The forest was dominated by ligneous trees of various species.”

3. adjective (botany)

covered in or resembling bark, especially in being thick and scaly

“The ligneous bark of the tree protected it from the harsh winter.”