Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “moss”

moss

noun [C or U] uk   /mɒs/ us    /mɑːs/
a very small, green or yellow plant that grows especially in wet earth or on rocks, walls, and tree trunks: The rocks near the river were covered with moss.Types of plant
mossy
adjective uk   /ˈmɒs.i/ us    /ˈmɑː.si/
a mossy tree/rock/lawnTypes of plant
(Definition of moss from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of moss?
Add Cambridge dictionaries to your browser to your website

Definitions of “moss” in other dictionaries

Word of the Day

roost

When birds roost, they go somewhere to rest or sleep.

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More