English
loosefill
From loose + fill.
Proto-Indo-European *lewh₁- ‘to cut, untie, loosen’
…
Proto-Germanic *leusaną ‘to lose’
Proto-Germanic *lausaz ‘loose’
Old Norse lauss ‘loose, free’
Middle English loos ‘loose, free’
English loose
Proto-Indo-European *pleh₁- ‘to fill’
…
Proto-Germanic *fullijaną ‘to make full’
Proto-West Germanic *fullijan ‘to fill’
Old English fyllan ‘to fill’
Middle English fillen ‘to fill up’
English fill
Today it means
noun A kind of insulation made of light loose materials spread evenly.
Language periods are conventional ranges, not dates for this word.
Etymograph / loosefill