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back-flap
back-flap n.
Brit. 
/ˈbakflap/
, /ˈbakflap/U.S. /ˈbækˌflæp/
= back-shutter n./ˈbækˌflæp/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-
1823 P. Nicholson New Pract. Builder 218 Back-shutters or Back-flaps, Additional breadths hinged to the front shutters.
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as lemmas