Move clumsily (6)
'move clumsily' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for lumber that I've seen before include "Burden with an unwanted task" , "articles in storage" , "Stored furniture; (US) timber" , "Clumsily move - junk" , "Move awkwardly - unwanted household items" .)
(Other definitions for lollop that I've seen before include "take it easy" , "Lounge" , "Bound along clumsily" , "Progress ineptly" , "Walk in loose and ungainly way" .)