- mouth [mouth; ] for v. [ mouth]n.pl. mouths [mouthz] [ME < OE muth, akin to Ger mund < IE base * menth-, to chew > Gr masasthai, L mandere, to chew]1. the opening through which an animal takes in food; specif., the cavity, or the entire structure, in the head of any of the higher animals which contains the teeth and tongue and through which sounds are uttered2.a) the mouth regarded as the organ of chewing and tastingb) the mouth regarded as the organ of speech3. a person or animal regarded as a being needing food [six mouths to feed]4. the lips, or the part of the face surrounding the lips5. a wry expression of the face; grimace: now only in the phrase make mouths (or a mouth) at6. any opening regarded as like the mouth; specif.,a) the part of a river, stream, etc. where the water empties into another body of waterb) the opening into the earth of a cave, volcano, tunnel, etc.c) the opening of a container, through which it is filled or emptiedd) the front opening in the barrel of a gune) the opening between the jaws of a vise, etc.f) the opening between the lips of an organ pipeg) the opening in a flute across which the player blowsvt.1.a) to say, esp. in an affected, oratorical, or insincere manner; declaimb) to form (a word) with the mouth soundlessly2. to take or put into the mouth3. to caress or rub with the mouth or lips4. to train (a horse) to become accustomed to the bitvi.1. to speak in an affected or oratorical manner; declaim2. Rare to make a wry face by twisting the mouth; grimace——————down in the mouth or down at the mouthInformal depressed; unhappy; discouraged——————give mouth toNow Rare to express in speech; say——————have a big mouthSlang to have a tendency to mouth off——————☆ mouth off Slangto talk loudly, excessively, indiscreetly, or impudentlymouther [mouth′ər]n.mouthlessadj.
English World dictionary. V. Neufeldt. 2014.