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flat-felled seam

American  
[flat-feld] / ˈflætˌfɛld /

noun

  1. a seam on the face of a garment, as on the outside of the legs of blue jeans, made by overlapping or interlocking one seam allowance with the other and top-stitching them together onto the garment with two parallel rows of stitches.


Etymology

Origin of flat-felled seam

First recorded in 1935–40