moss
US /mɑːs/
UK /mɑːs/

1.
Moos
a small flowerless green plant that lacks true roots, growing in low carpets or rounded cushions in damp habitats and reproducing by spores.
:
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The old stone wall was covered in soft green moss.
Die alte Steinmauer war mit weichem grünem Moos bedeckt.
•
Be careful, the steps are slippery with moss.
Sei vorsichtig, die Stufen sind rutschig wegen des Mooses.
1.
vermoosen
cover with moss.
:
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The old roof had begun to moss over.
Das alte Dach hatte begonnen zu vermoosen.
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The stones in the garden were slowly mossing.
Die Steine im Garten vermoosten langsam.