The harmonica / The panpipes / The Jew's harp

Alternative spelling of poormouth

Involving immediate consumption (especially of food) with no provision for the future; having barely enough to survive, in poverty

That part of a river, estuary or lagoon which broadens out as it meets the sea

A person who routinely inhales and exhales through the mouth, instead of through the nose. / (idiomatic, slang, derogatory) A person who is boorish, stupid, or otherwise unattractive.

Alternative spelling of motormouth

prone to speaking evasively, indirectly, or duplicitously; not forthright

The vocal imitation of instrumental music. / Words (or sometimes actions) that sound good but do not mean anything.

(idiomatic) The mouth of someone who talks too much, especially by making exaggerated claims or by inappropriately revealing information.

(idiomatic) Verbal means of passing on information.