gnarled(knotty and misshapen) adjective [UK: nɑːld] [US: ˈnɑːrld]
knobbly [knobblier, knobbliest](having a covering of small knobs) adjective [UK: ˈnɒ.bli] [US: ˈnɒ.bli]
knotty [knottier, knottiest](of string or something stringlike: full of, or tied up, in knots) adjective [UK: ˈnɒ.ti] [US: ˈnɑː.ti]The tree had a knotty trunk. = El árbol tenía el tronco nudoso.