English
lumberroom
From lumber + room.
Proto-Indo-European *(H)rewH- ‘to root’
Proto-Germanic *rūmą
Proto-West Germanic *rūm
Old English rūm ‘room’
Middle English roum ‘room’
English room
Today it means
noun A room in which lumber is stored
Language periods are conventional ranges, not dates for this word.
Etymograph / lumberroom