μῦ

English (LSJ)

τό, name of the letter μ, IG2.4321.24 (iv B. C.), Epigr. ap. Ath. 10.454f, Hellad. ap. Phot.Bibl.p.530 B., etc.    2 μῦ or μὺ μῦ, to represent a muttering sound made with the lips, μῦ λαλεῖν to mutter, Hippon.80 (dub. l.); to imitate the sound of sobbing, μὺ μῦ, μὺ μῦ Ar.Eq.10.