English
floodwood
flood + wood
Proto-Indo-European *pleh₃(w)- ‘to swim, flow’
Proto-Germanic *flōduz ‘river’
Proto-West Germanic *flōdu ‘river’
Old English flōd ‘flowing of the tide’
Middle English flod ‘a river; a waterbody that moves in one direction’
English flood
Proto-Indo-European *h₁weydʰh₁- ‘to separate’
…
Proto-West Germanic *widu ‘forest’
Old English widu
Old English wudu ‘wood’
Middle English wode ‘wood’
English wood
Today it means
noun Driftwood carried by a flood.
Language periods are conventional ranges, not dates for this word.
Etymograph / floodwood