▪ I.† isse,int.Obs. [A natural utterance: cf.hush, st, whisht.] An ejaculation enjoining silence. 1598Florio, Zita, an aduerbe to commaund or perswade silence, as we say isse, whisht or st. ▪ II.isse obs. form of ice. ▪ III.isse, issh var. of ish v. Obs.