Useful english dictionary. 2012.
knubby — /nub ee/, adj., knubbier, knubbiest. nubby. Also, knubbed. * * * … Universalium
nubby — /nub ee/, adj. nubbier, nubbiest. having nubs; knobby or lumpy. Also, knubby, nubbed, knubbed. [1875 80; NUB + Y1] * * * … Universalium