Letters that make knobby
o, b, k, n, y are letters that make 'knobby'
1 possible definitions for 'knobby'
Under this definition, knobby is an adjective and has the following properties:
knobbly has the same meaning as knobby
knobble, node, knob, thickening are derivatives of 'knobby'.
unshapely is similar to knobby.