plural mosses
: a type of green plant that has very small leaves and no flowers and that grows on rocks, bark, or wet ground
Moss covered the fallen logs.
ferns and mosses
Cite this Entry
“Moss.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/moss. Accessed 17 Apr. 2026.
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