The term "life-of-man" refers to a specific type of plant. Here’s a clear breakdown of the word:
Life-of-man is a noun that describes an unarmed woody plant that has a rhizome (a type of root) and grows back year after year (it's a perennial). This plant is different from another plant called wild sarsaparilla because it has roots that smell stronger and has flower clusters called panicled umbels. It is commonly found in the southeastern part of North America and Mexico.
"Life-of-man" is a unique plant known for its aromatic roots and beautiful flowers, found in specific regions. It is mostly used in discussions related to botany and gardening.