noun
thick legs; fat legs; cankles
Colloquial, often self-deprecating or teasing term for thick, unshapely legs, likening them to a daikon radish. 'Cankle' is a close English equivalent but refers specifically to thick ankles; 大根足 can refer to the whole lower leg.
最近太って、大根足が気になる。
I've gained weight lately and I'm self-conscious about my thick legs.
彼女は自分の足
She laughed and said her legs were like daikon radishes.