noun. 
                    The pungent fleshy root of a well-known cruciferous plant (Raphanus sativus); also, the whole plant.
                  
                
                  
                    noun. 
                    a small two-winged fly (Anthomyia raphani) whose larvæ burrow in radishes. It resembles the onion fly.
                  
                
                  
                    noun. 
                    an herb (Raphanus caudatus) having a long, slender pod, which is sometimes eaten.
                  
                
                  
                    noun. 
                    the jointed charlock.