• n. 牙齒
• vt. 給……裝齒
• vi. 嚙合
• n. (Tooth)人名；(英)圖思

來自古英語 toth(plural teth,),來自 Proto-Germanic*tan-thuz,來自 PIE*dent,牙齒，來自*ed,吃， 咬，詞源同 eat,edible,-ent,現在分詞格。

tooth

tooth: [OE] Etymologically, a tooth is an ‘eater’. Its ultimate source is the prehistoric Indo- European base *ed- ‘eat’, which also lies behind English eat and edible. From this was formed the noun *dont-, *dent- ‘tooth’, whose descendants include Latin dēns ‘tooth’ (source of English dentist, indent, trident [16], etc), Greek odón ‘tooth’, (source of English odontology [19]), Welsh dant ‘tooth’, and prehistoric Germanic *tanthuz. This evolved into German zahn, Dutch, Swedish, and Danish tand, and English tooth. A variant of *tanthuz may lie behind English tusk.
=> dentist, eat, edible, indent, odontology, trident, tusk

tooth (n.)

Old English toe (plural tee), from Proto-Germanic *tan-thuz (cognates: Old Saxon, Danish, Swedish, Dutch tand, Old Norse t?nn, Old Frisian toth, Old High German zand, German Zahn, Gothic tuntus), from PIE *dent- "tooth" (cognates: Sanskrit danta, Greek odontos, Latin dens, Lithuanian dantis, Old Irish det, Welsh dent). Plural form teeth is an instance of i-mutation.

Application to tooth-like parts of other objects (saws, combs, etc.) first recorded 1520s. Tooth and nail as weapons is from 1530s. The tooth-fairy is attested from 1964.

1. A dentist may decide to extract the tooth to prevent recurrent trouble.

牙醫可能會決定拔掉那顆牙，以免反復發作。

來自柯林斯例句

2. When not removed, plaque causes tooth decay and gum disease.

牙斑如果不清除就會導致牙齒蛀蝕和牙齦疾病。

來自柯林斯例句

3. He fought tooth and nail to keep his job.

他竭盡全力保住自己的工作。

來自柯林斯例句

4. I got an abscess so he took the tooth out.

我牙齦膿腫，所以他就把那顆牙拔掉了。

來自柯林斯例句

5. We went over that area with a fine-tooth comb.

我們對那個地區進行了徹底的搜查。

來自柯林斯例句