To mark with seams or to cover with seam-like lines or divisions.
From 'be-' (prefix making verbs) + 'seam' (from Old English 'seam,' a line where things join). The verb form emphasizes thoroughly creating or covering with seams.
Seams are one of humanity's oldest technologies—they represent the moment humans figured out how to join fabric pieces, and they appear in archaeological evidence from at least 100,000 years ago!
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