hop clover

n 1: prostrate European herb with small yellow flowers and curved

black pods; naturalized in North America [syn: {black

medick}, {yellow trefoil}, {nonesuch clover}, {Medicago

lupulina}]

2: clover native to Ireland with yellowish flowers; often

considered the true or original shamrock [syn: {shamrock},

{lesser yellow trefoil}, {Trifolium dubium}]