sham·rock /ˈʃæmˌrɑk/
天藍
Sham·rock n. Bot. A trifoliate plant used as a national emblem by the Irish. The legend is that St. Patrick once plucked a leaf of it for use in illustrating the doctrine of the trinity.
Note: ☞ The original plant was probably a kind of wood sorrel (Oxalis Acetocella); but now the name is given to the white clover (Trifolium repens), and the black medic (Medicago lupulina).
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shamrock
n 1: creeping European clover having white to pink flowers and
bright green leaves; naturalized in United States;
widely grown for forage [syn: white clover, dutch
clover, Trifolium repens]
2: Eurasian plant with heart-shaped trifoliate leaves and white
pink- or purple-veined flowers [syn: common wood sorrel,
cuckoo bread, Oxalis acetosella]
3: clover native to Ireland with yellowish flowers; often
considered the true or original shamrock [syn: hop clover,
lesser yellow trefoil, Trifolium dubium]