knobbly
/ˈnɒbli/Definitions
1. adjective
Having or covered with knobs or protuberances; uneven or bumpy.
“The knobbly road made it difficult for the tourists to drive through the mountains.”
2. noun
A knobbly texture or surface.
“The artist used a mix of knobbly and smooth textures to create a unique effect in her painting.”