zzz [zːːː]exclamation 1verb 1forms 3 exclamation1 •A snoring sound, implying that somebody is asleep. verb1 •To sleep or snore.He lay back on his pillow, made a faint zzzing sound that ceased, and presently and quite quietly he died — greatly comforted by my assurance. — 1909 formszzzed · zzzing · zzzs