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From hair + pin, 1788 (as hair pin). Adjective sense 1906 in hairpin turn etc.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: A pin or fastener for the hair. Full definition →
From hair + pin, 1788 (as hair pin). Adjective sense 1906 in hairpin turn etc.
Etymology from Wiktionary, CC BY-SA 4.0.