gimbal ring
The American Dictionary and Cyclopedia · 1910 · p. 17
A single gimbal by which the cock-eye of the upper millstone is supported on the spindle to permit vibration; a rynd. gimb-lět, s. [GIMLET.] "His adzes, saws, planes, and gimlets , were not made, as we suppose, to hew, cut smooth, shape out, or bore wood with." -Paley: Natural Theology , ch. iv.
Readham'da tam maddeyi gor →