/sham"rok/ , n.
any of several trifoliate plants, as the wood sorrel, Oxalis acetosella, or a small, pink-flowered clover, Trifolium repens minus, but esp. Trifolium procumbens, a small, yellow-flowered clover: the national emblem of Ireland.
[ 1565-75; seamróg, equiv. to seamair clover + -óg dim. suffix ]