الواصلة
linch·pinالتركية النطق
lînçpînالنطق
/ˈlənʧˌpən/ /ˈlɪnʧˌpɪn/
علم أصول الكلمات
() Middle English lynspin, compound of lins 'axletree' and pin, from Old English lynis 'linchpin', from Proto-Germanic *luniso (compare German Lünse), from Proto-Indo-European (compare Welsh olwyn 'wheel', Armenian ołn 'shoulder', Sanskrit āṇís). Figurative use attested from the mid-20th century.