knobble

[ nob-uh l ]
/ ˈnɒb əl /

verb (used with object), knob·bled, knob·bling.

to knob (excess stone).
Metallurgy. to treat (semirefined puddled iron) on a hearth before shingling to produce wrought iron.

Origin of knobble

First recorded in 1835–45; knob + -le

OTHER WORDS FROM knobble

knob·bler [nob-ler] /ˈnɒb lər/, noun