Knobby

Often, my own mum would take my hand in hers and comment with a smile at the little starbursts of flesh that existed where knobby knuckles should have been.

You’ve just escaped twenty flyerers and reached the end of Sproul Plaza when one of the knobby trees lining the pavement waves to you.

Many trials unicycles also have wide, 19- or convert knobby tires to absorb some of the impact on drops.

Mountain bikes, therefore, are more sturdily constructed than regular bicycles, have larger knobby tires, more powerful brakes, and the lower gear ratios needed for steep grades with poor traction.