'knobby' is a correct and usable word in written English
It is an adjective that describes something that is bumpy or covered in knobs or bumps. Example: The old door handle was knobby and worn from years of use.
A smaller division producing the fat, knobby tyres used by construction, farming and mining vehicles is doubling production this year.All this growth comes despite fierce competition.
The bryozoans attached their undersurfaces to the seafloor and formed either fanlike, twiglike, or small knobby colonies of calcium carbonate in areas characterized by low rates of sedimentation.
The plates created a series of knobby ridges that ran across each tooth from tongue to cheek, as in modern elephants.
In contrast to the back and belly, the sides of the body have mostly small knobby scales.
In knobby terrain, numerous small hills are separated by smooth plains.
Tire chains first became available in 1904 and knobby snow tires by 1936.
The body is protected by knobby armoured plates.
Most nymphalid larvae are brightly coloured and have knobby projections (tubercules), horns, and branching spines.
Young peach and nectarine fruits may drop early or are knobby with discoloured warty spots; plum fruits become greatly swollen, distorted, and hollow (plum pockets); witches'-brooms may form on alder, Amelanchier, apricot, birch, cherry, cherry laurel, California buckeye, and plum stems; alder and poplar catkins are enlarged and deformed.
In some cases, continued deposition of uric acid salts may cause knobby deformities (tophi) and may also occur in cartilage that is not associated with the joints, such as the rim of the ear.
