Simple past tense and past participle of moss.(verb)
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Use "mossed" in a sentence
"They'd be going toward the light, he knew, and he pushed himself, stumbling over mossed over logs, creek water soaking into his loafers."
"Sat upon a mossed - up flat piece of granite and got very still for awhile moving only my eyes."
"The roof of the rustic hut Thatched Hermitage, the mossed stones from the downward rushing water, ferns and water plants completed the perfect setting for an imagination to run roughshod over reality."