A small fly, Delia platura (family Anthomyiidae), whose larvae burrow in radishes and in the roots and seeds of various other crops (also called seed-corn maggot);.
Origin
Mid 19th century.
Definition of radish fly in US English:
radish fly
noun
A small fly, Delia platura (family Anthomyiidae), whose larvae burrow in radishes and in the roots and seeds of various other crops (also called seed-corn maggot);.