Is “Knobble” a Scrabble word?
Yes
KNOBBLE
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Knobble
/ˈnɒb.əl/
noun
1.A small knob.
verb
1.To give a knobbly surface to.
2.To produce wrought iron by treating (semirefined puddled iron) on a hearth before shingling.
“a knobbling furnace”