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Sleeper
"Sleeper" in German
Futterholz
(structural timber in a floor perpendicular to the joists and floorboards)
Lagerholz
(structural timber in a floor perpendicular to the joists and floorboards)
Unterlageholz
(structural timber in a floor perpendicular to the joists and floorboards)
See also for "sleeper"
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Unscramble this word: sleeper