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back-fold
back-fold n.
Brit. 
/ˈbakfəʊld/
, /ˈbakfəʊld/U.S. /ˈbækˌfoʊld/
/ˈbækˌfoʊld/ΘΚΠ
society > inhabiting and dwelling > inhabited place > a building > parts of building > window or door > parts of windows > [noun] > fittings or ornaments of windows > shutter > parts of shutter
leafc1380
back-flap1823
back-fold1851
back-shutter-
1851 Jrnl. Royal Agric. Soc. 12 i. 158 The windows..finished with bound shutters and back-folds.
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as lemmas