mouthyoudaoicibaDictYouDict[mouth 词源字典]
mouth: [OE] Mouth is part of a general Germanic family of ‘mouth’-words that go back to a prehistoric *munthaz: its modern relatives include German and Danish mund, Dutch mond, and Swedish mun. The loss of the nasal consonant is part of a general phenomenon that happened in primitive Old English (and also in Old Frisian and Old Saxon) whose effects can be seen also in goose (beside German gans) and tooth (beside German zahn). It is thought that *munthaz itself comes from the same Indo- European source as produced Latin mentum ‘chin’.
[mouth etymology, mouth origin, 英语词源]
mouth (n.)youdaoicibaDictYouDict
Old English muþ "mouth, opening, door, gate," from Proto-Germanic *munthaz (cognates: Old Saxon, Old Frisian muth, Old Norse munnr, Danish mund, Middle Dutch mont, Dutch mond, Old High German mund, German Mund, Gothic munþs "mouth"), with characteristic loss of nasal consonant in Old English (compare tooth, goose), from PIE *mnto-s (cognates: Latin mentum "chin"). In the sense of "outfall of a river" it is attested from late Old English; as the opening of anything with capacity (a bottle, cave, etc.) it is recorded from c. 1200. Mouth-organ attested from 1660s.
mouth (v.)youdaoicibaDictYouDict
c. 1300, "to speak," from mouth (n.). Related: Mouthed; mouthing. Old English had muðettan "to blab."