"lumbering" in the noun sense
1. lumbering
the trade of cutting or preparing or selling timber
"lumbering" in the verb sense
1. lumber, pound
move heavily or clumsily
"The heavy man lumbered across the room"
2. log, lumber
cut lumber, as in woods and forests
"lumbering" in the adjective sense
1. heavy, lumbering, ponderous
slow and laborious because of weight
"the heavy tread of tired troops"
"moved with a lumbering sag-bellied trot"
"ponderous prehistoric beasts"
"a ponderous yawn"
Source: WordNet® (An amazing lexical database of English)
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