v. (also ise) (zing or sing) (often foil. by with) 1 associate; make friends. 2 enter into friendly relations with enemies etc. fraternization pzeil(a)n/ n. [French and Latin: related to FRATERNAL] fratricide rfraetri,saul/ n. 1 killing of one’s brother or sister. 2 person who does this. c fratricidal /’said(a)l/ adj. [Latinfrater brother]