Third-person singular simple present indicative form of lumber.(verb)
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Use "lumbers" in a sentence
"But if this thing kind of lumbers on shore and then takes a good day, day and a half to get over to the Gulf of Mexico, we could be talking about 10 to 15 inches of rainfall, maybe even higher than that in some case."
"At the bridge, a massive brown bear lumbers down the dirt road."
"I look back at the mother bear, andshe sort of nods slowly, then lumbers off to roll around with her cub."