Etymology
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lappet (n.)
"a small flap," 1570s; earlier "lobe of a body part" (early 15c.), from Middle English lappe "lap" (see lap (n.1)) + -et, diminutive suffix.
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lapel (n.)
part of a garment folded back and overlapping another, 1751 (implied in lapelled), from lap (n.2) + -el (2), diminutive suffix. Compare lappet.
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