In addition to its primary role as the beginning of the digestive system in humans the mouth also plays a significant role in communication.. (click to enlarge) mouth a. hard palate b. lips c. teeth d. salivary glands e. trachea f. esophagus g Translations of mouth. mouth synonyms mouth antonyms. information about mouth in the free online english dictionary and encyclopedia. her mouth his mouth. Oral cavity ( ?ör?l ?kav?d? ) ( anatomy ) the cavity of the mouth. Mouth definition at dictionary.com a free online dictionary with pronunciation synonyms and translation. look it up now! They also can occur on the gums and roof of the mouth (hard palate) but this is rare.. mouth sores offer an easy way for germs and viruses to get into the body.. Definition of mouth from the merriam-webster online dictionary with audio pronunciations thesaurus word of the day and word games. Get information facts and pictures about mouth at encyclopedia.com. make research projects and school reports about mouth easy with credible articles. Mouth (plural mouths) (anatomy) the opening of a creature through which food is ingested.. the mouth of the river is a good place to go birdwatching in spring and autumn.. The human mouth is located on the face just below the nose and is the entrance to the digestive tract. it is the first part of the body involved in.