shamrock
Concise Oxford English Dictionary © 2008 Oxford University Press:
shamrock/ˈʃamrɒk/
▶noun a low-growing clover-like plant with three-lobed leaves, the national emblem of Ireland. [Trifolium minus and other species.]
– origin C16: from Ir. seamróg ‘trefoil’ (dimin. of seamar ‘clover’).
'shamrock' also found in these Oxford entries:
