1A crystalline globulin found in the seeds of the kidney bean.
2= phaseollin. Now rare.
Origin
Mid 19th century (in an earlier sense). From scientific Latin Phaseolus, genus name (Linnaeus Species Plantarum II. 723; from classical Latin phaseolus kidney bean, alteration (after -olus) of phasēlus from ancient Greek ϕάσηλος, further etymology uncertain: perhaps of non-Indo-European origin) + -in.