moss

1 of 2

noun

ˈmȯs 

1

chiefly Scotland : bog, swamp

especially : a peat bog

2

a

: any of a class (Musci) of bryophytic plants characterized by a gametophyte having a small leafy often tufted stem bearing sex organs at its tip

also : a clump or sward of these plants

b

: any of various plants resembling moss in appearance or habit of growth

3

: a mossy covering

mosslike

ˈmȯs-ˌlīk 

adjective

moss

2 of 2

verb

mossed; mossing; mosses

transitive verb

: to cover or overgrow with moss

Examples of moss in a Sentence

Noun

Moss covered the fallen logs.

Recent Examples on the Web

Noun

True Sea Moss worked with food developers in California to create products designed to present sea moss in offerings that were both pleasing in taste and texture. — Lyssanoel Frater, USA Today, 7 July 2026

Top 5 Can’t Miss Walk through the moss-laden trails of the Hoh Rain Forest, marvel at the massive sea stacks of Rialto Beach, and take in sweeping summit views from Hurricane Ridge. — Zoe Baillargeon, Travel + Leisure, 5 July 2026

Fresh-faced and energetic, with salt-and-pepper curls falling over the shoulders of her moss-green sweater and gold jewelry punctuating her gestures, Brock Akil is youthful in a way that defies Hollywood’s ever-more-plasticky imitation of youth. — Judy Berman, Time, 29 June 2026

Ingredients include shea, jojoba, Icelandic moss, and lotus to help soothe the skin after a long sun-soaking day. — Condé Nast, Condé Nast Traveler, 26 June 2026

Word History

Etymology

Noun

Middle English, from Old English mos; akin to Old High German mos moss, Latin muscus

First Known Use

Noun

before the 12th century, in the meaning defined at sense 1

Verb

15th century, in the meaning defined above

Phrases Containing moss

• club moss
• Iceland moss
• Irish moss
• moss agate
• moss animal
• moss green
• moss-grown
• moss pink
• moss rose
• moss-trooper
• peat moss
• reindeer moss
• Spanish moss
• sphagnum moss

Rhymes for moss

• blas
• bos
• boss
• bosse
• clos
• crosse
• dos
• doss
• dross
• floss
• foss
• fosse

Kids Definition

moss

noun

ˈmȯs

1

: any of a class of plants that have no flowers and produce small leafy stems forming sex organs at their tips and that grow in patches like cushions on rocks, bark, or damp ground

2

: any of various plants (as lichens) resembling mosses compare reindeer moss

mosslike

-ˌlīk

adjective

mossy

ˈmȯ-sē

adjective

Medical Definition

moss

noun

ˈmȯs 

1

: any of a division (Bryophyta) of plants having a small leafy often tufted stem bearing sex organs at its tip see sphagnum

2

: any of various plants resembling mosses in appearance or habit of growth see club moss, iceland moss, irish moss