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 (n.)
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.)
c. 1300, "to speak," from mouth (n.). Related: Mouthed; mouthing. Old English had muðettan "to blab."
中文解释
联想：说话“冒失”的就是嘴。
实用例句
1. A thorough brushing helps to freshen up your mouth.
彻底刷牙有助于口气清新。
来自柯林斯例句
2. His mouth was a little open, as if he'd started to scream.
他的嘴微微张开,似乎是要开始尖叫.
来自柯林斯例句
3. I've always had a loud mouth, I refuse to be silenced.
我一贯大声说出自己的想法，不会迫于压力而一言不发。
来自柯林斯例句
4. You wouldn't be here now if she'd kept her mouth shut.
如果她守口如瓶的话，你现在就不会在这儿啦。
来自柯林斯例句
5. She flicked a crumb off the corner of her mouth.