What is a robber. [Obs. or Prov. Eng.] Drummond. Rider's bone (Med.), a bony deposit in the muscles of the upper and inner part of the thigh, due to the pressure and irritation caused by the saddle in riding called?

rider — A robber. [Obs. or Prov. Eng.] Drummond. Rider's bone (Med.), a bony deposit in the muscles of the upper and inner part of the thigh, due to the pressure and irritation caused by the saddle in riding. (Webster's 1913.)

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