Having a covering of small knobs.

A small knob.

(transitive) To give a knobbly surface to. / (transitive, metallurgy) To produce wrought iron by treating (semirefined puddled iron) on a hearth before shingling.

plural of knobble

present participle of knobble

simple past tense and past participle of knobble

Possessing a bumpy surface; knobbly.

(informal) motorcycle tyres with knobbed treads, for off-road or motocross riding