/ Dictionary / Index K knobbling roll: Meaning and Definition of Find definitions for: knob'bling roll" Pronunciation: (nob'ling), [key] — Metalworking. Metalworking. a roll for a rolling mill, having a series of regularly shaped projections and depressions on its face. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. knobble knobby Related Content Daily Word Quiz: lyre Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language