Englishfor English speakers
involute
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adjective
(of some shells) closely coiled so that the axis is obscured
—
adjective
(= rolled)
especially of petals or leaves in bud; having margins rolled inward
gearing
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noun
(= gear, geartrain)
wheelwork consisting of a connected set of rotating gears by which force is transmitted or motion or torque is changed
the fool got his tie caught in the geartrain