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- 5 Anatomy a light-sensitive cell of one of the two types present in large numbers in the retina of the eye, responsible mainly for monochrome vision in poor light. Compare with cone (sense 3).
- see ride.
late Old English rodd 'slender shoot growing on or cut from a tree', also 'straight stick or bundle of twigs used to inflict punishment'; probably related to Old Norse rudda 'club'