lesser yellow trefoil(n = noun.plant) hop clover, shamrock, trifolium dubium - clover native to Ireland with yellowish flowers; often considered the true or original shamrock;
is a kind of clover, trefoil

alizarin yellow, bean trefoil, bird's foot trefoil, brownish yellow, cadmium yellow, cadmium yellow pale, california yellow bells, canary yellow, chrome yellow, downy yellow violet, great yellow gentian, greenish yellow, large yellow lady's slipper, lemon yellow, lesser, lesser anteater, lesser antilles, lesser ape, lesser bullrush, lesser burdock, lesser butterfly orchid, lesser calamint, lesser celandine, lesser centaury, lesser duckweed, lesser galangal, lesser hemlock, lesser knapweed, lesser kudu, lesser omentum, lesser panda, lesser peritoneal cavity, lesser prairie chicken, lesser rhomboid muscle, lesser rorqual, lesser scaup, lesser scaup duck, lesser spearwort, lesser sunda islands, lesser twayblade, lesser whitethroat, lesser wintergreen, lesser yellowlegs, marsh trefoil, moon trefoil, naples yellow, onion yellow dwarf, orange yellow, pale yellow, potato yellow dwarf, prairie bird's-foot trefoil, prairie trefoil, shortleaf yellow pine, southern yellow pine, stinking bean trefoil, tick trefoil, to a lesser degree, to a lesser extent, trefoil, trefoil arch, water trefoil, western yellow pine, wild yellow lily, yellow, yellow adder's tongue, yellow ageratum, yellow asphodel, yellow avens, yellow bachelor's button, yellow bass, yellow bean, yellow bedstraw, yellow bells, yellow berry, yellow bile, yellow birch, yellow bone marrow, yellow book, yellow bristle grass, yellow bristlegrass, yellow bugle, yellow bunting, yellow cattley guava, yellow cedar, yellow chamomile, yellow chestnut oak, yellow cleavers, yellow clintonia, yellow colicroot, yellow cypress, yellow delicious, yellow dock, yellow dwarf, yellow dwarf of potato, yellow fever, yellow flag, yellow foxglove, yellow foxtail, yellow giant hyssop, yellow globe lily, yellow goatfish, yellow granadilla, yellow green, yellow gurnard, yellow hawkweed, yellow henbane, yellow honeysuckle, yellow horned poppy, yellow hornet, yellow iris, yellow ironweed, yellow jacaranda, yellow jack, yellow jacket, yellow jasmine, yellow jessamine, yellow journalism, yellow lady's slipper, yellow lady-slipper, yellow light, yellow locust, yellow loosestrife, yellow lupine, yellow man, yellow mariposa tulip, yellow marrow, yellow metal, yellow milkwort, yellow mombin, yellow mombin tree, yellow mountain saxifrage, yellow nutgrass, yellow oak, yellow ocher, yellow ochre, yellow oleander, yellow pages, yellow paper daisy, yellow parilla, yellow pea, yellow perch, yellow peril, yellow pimpernel, yellow pine, yellow pitcher plant, yellow pond lily, yellow poplar, yellow prussiate of potash, yellow race, yellow river, yellow rocket, yellow root, yellow salsify, yellow sand verbena, yellow sea, yellow spiny daisy, yellow spot, yellow spot fungus, yellow spruce, yellow squash, yellow star-thistle, yellow sweet clover, yellow trefoil, yellow trumpet, yellow turnip, yellow twining snapdragon, yellow vetchling, yellow warbler, yellow water flag, yellow water lily, yellow watercress, yellow woman