You know what it looks like… but what is it called?
TAKE THE QUIZ“lignum”
The following 3 entries include the term lignum.
lignum vitae
noun: the very hard heavy wood of any of several tropical American guaiacums
bastard lignum vitae
noun: a tropical American tree (Guaiacum sanctum) yielding a wood similar to the lignum vitae
lignum aloes
noun plural but usually singular in constructionLove words? Need even more definitions?
Merriam-Webster unabridged