An underlying layer of vegetation, especially the plants that grow beneath a forest's canopy.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "understory" in a sentence
"Many palm species, and a rich and diverse understory is a characteristic of these jungles."
"It includes a bit of semolina which both adds gluten and a thin understory of crunch that's appealing in savory dishes and I suspect, some fruity pies like apple."
"Cutting out the vegetative understory, which is what the town wants, removes some of that protection."