SHAMROCK, a small trefoil plant, the national emblem of Ireland; it is matter of dispute whether it is the wood-sorrel, a species of clover, or some other allied trefoil; the lesser yellow trefoil is perhaps the most commonly accepted symbol.

He seems himself to have been a man of substance and position; he already used the arms, the double trefoil, which are still borne by all the branches of his family.

Later periodGeometrical trefoil and circular tracery in windows.

Scarlet trefoil : Beeban.

SHAMROCK, a small trefoil plant, the national emblem of Ireland; it is matter of dispute whether it is the wood-sorrel, a species of clover, or some other allied trefoil; the lesser yellow trefoil is perhaps the most commonly accepted symbol.