To express by humming.
To produce low sounds which blend continuously
To reek, smell bad.
To make a sound from the vocal chords without pronouncing any real words, with one's lips closed.
To drone like certain insects naturally do in motion, or sounding similarly
To buzz, be busily active like a beehive
Unpleasant odour.
A phenomenon, or collection of phenomena, involving widespread reports of a persistent and invasive low-frequency humming, rumbling, or droning noise not audible to all people.
Busy activity, like the buzz of a beehive.
A hummed tune, i.e. created orally with lips closed.
An often indistinct sound resembling human humming.
Synonym of um: a noise indicating doubt, uncertainty, &c.
Synonym of hmm: a noise indicating thought, consideration, &c.
To make a noise with, or as if with, a siren.
A musical instrument, one of the few aerophones in the percussion section of the symphony orchestra (patented as Acme Siren in 1895).
An astrophysical event that can be used for calculating cosmic distances.
A dangerously seductive woman.
A member of a genus of aquatic salamanders of the family Sirenidae, commonly used for all species subsumed under the family of Sirenidae.
A member of an order of mammals of Sirenia.
One of a group of nymphs who lured mariners to their death on the rocks.
One who sings sweetly and charms.
Any of various nymphalid butterflies of the genus Hestina.
A device, either mechanical or electronic, that makes a piercingly loud sound as an alarm or signal, or the sound from such a device (first recorded 1879).
An instrument for demonstrating the laws of beats and combination tones.
Relating to or like a siren.