الواصلة
 Rules of thumbالتركية النطق
 rulz ıv thʌmالنطق
 /ˈro͞olz əv ˈᴛʜəm/ /ˈruːlz əv ˈθʌm/
علم أصول الكلمات
 [ 'rül ] (noun.) 13th century. Middle English reule, from Old French, from Latin regula straightedge, rule, from regere to direct; more at RIGHT.