shamrock

• POS: Noun
• HYPHEN: sham=rock

CIDE DICTIONARY

shamrock, n. [L. seamrog, seamar, trefoil, white clover, white honeysuckle; akin to Gael. seamrag.].

 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.  [1913 Webster]
" 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)."  [1913 Webster]

OXFORD DICTIONARY

shamrock, n. any of various plants with trifoliate leaves, esp. Trifolium repens or Medicago lupulina, used as the national emblem of Ireland.

Etymology

Ir. seamr{oacute}g trefoil, dimin. of seamar clover + og young

THESAURUS

shamrock

armory, badge, badge of office, badges, baton, blazonry, brassard, button, cap and gown, chain, chain of office, class ring, clover, cockade, collar, cross, decoration, deuce-ace, dress, eagle, emblems, ensigns, fasces, figurehead, fleur-de-lis, hammer and sickle, heraldry, insignia, lapel pin, leash, livery, mace, mantle, markings, medal, mortarboard, old school tie, pin, regalia, ring, rose, school ring, set of three, sigillography, skull and crossbones, sphragistics, staff, swastika, tartan, tercet, ternary, ternion, terzetto, thistle, three, threesome, tie, tierce, trefoil, trey, triad, trialogue, triangle, tricorn, trident, triennium, trihedron, trilogy, trimester, trine, trinity, trinomial, trio, triphthong, triple crown, triple threat, triplet, triplopy, tripod, triptych, trireme, triseme, triskelion, trisul, triumvirate, triunity, trivet, troika, uniform, verge, wand

ROGET THESAURUS

shamrock

Triality

N triality, trinity, triunity, three, triad, triplet, trey, trio, ternion, leash, shamrock, tierce, spike-team, trefoil, triangle, trident, triennium, trigon, trinomial, trionym, triplopia, tripod, trireme, triseme, triskele, triskelion, trisula, third power, cube, cube root, three, triform, trinal, trinomial, tertiary, ternary, triune, triarch, triadie, triple, tri-, tris-, tria juncta in uno.