n.
Pronunciation: ' fra-tr ə - ˌ s ī d
Function: noun
Etymology: in sense 1, from Middle English, from Middle French or Latin; Middle French, from Latin fratricida, from fratr-, frater brother + -cida -cide; in sense 2, from Middle French or Latin; Middle French, from Latin fratricidium, from fratr-, frater + -cidium -cide
Date: 15th century
1 : one that murders or kills his or her own brother or sister or an individual (as a countryman) having a relationship like that of a brother or sister
2 : the act of a fratricide
– frat · ri · cid · al \ ˌ fra-tr ə - ' s ī -d ə l \ adjective