ˈshamˌräk sometimes -_rək noun
( -s )
Etymology: Irish Gaelic seamrōg, diminutive of seamar trefoil, clover, honeysuckle
1. : any of several trifoliolate plants used as a floral emblem of the Irish: as
a. : a hop clover ( Trifolium dubium ) occurring naturally in Ireland and often regarded as the true or original shamrock
b. : a wood sorrel ( Oxalis acetosella )
c. : white clover a
d. : black medic
2. or shamrock green : a strong yellowish green that is greener and darker than Cyprus green and lighter, stronger, and slightly yellower than emerald (sense 2b)