Definitions of pod. noun. the vessel that contains the seeds of a plant (not the seeds themselves) synonyms: cod, seedcase. see more. noun. a several-seeded dehiscent fruit as e.g. of a leguminous plant. synonyms: seedpod. see more. POD | definition in the Cambridge English Dictionary Meaning of pod in English pod noun [ C ] us / pɑːd / uk / pɒd / pod noun [C] (PLANT) Add to word list a long, narrow, flat part of some plants, such as beans and peas, that contains the seeds and usually has a thick skin: seed pods a pea / vanilla pod Jenny Dettrick/Moment/GettyImages AphiP.