Longman Dictionary English From Longman Dictionary of Contemporary Englishknobblyknob‧bly /ˈnɒbli $ ˈnɑːbli/ (also knobby /ˈnɒbi $ ˈnɑːbi/ American English) adjective STICK OUTwith hard parts that stick out from under the surface of something knobbly knees ldoceonline.com