tooth
n. countablen. one of the hard, white parts in your mouth that you use for biting and chewing food.
n. one of the hard, calcified structures set in the jaws of vertebrates, used for biting and masticating food. In a broader sense, it refers to any tooth-like projection on a tool or a plant organ.
I brush every tooth in my mouth twice a day.
The dentist checked each tooth for signs of decay during the routine annual examination.
While the primary function of the mammalian tooth is mechanical digestion, its structure and wear patterns provide paleontologists with vital data regarding the diet and environment of extinct species.
From Middle English tothe, toth, tooth, from Old English tōþ (“tooth”), from Proto-West Germanic tanþ (“tooth”), from Proto-Germanic tanþs (“tooth”), from Proto-Indo-European *h₃dónts (“tooth”). Related to tusk. Doublet of dent, dens, tind, and tine. Cognates Cognate with Scots tuith (“tooth”), North Frisian Ter, teän, tosch, toske, tuis, tus, tusch, täis (“tooth”), Saterland Frisian Tusk (“tooth”), West Frisian tosk (“tooth”), Bavarian Zåhn (“tooth”), Dutch tand (“tooth”), German Zahn (“tooth”), Limburgish tandj (“tooth”), Luxembourgish Zant (“tooth”), Vilamovian cōn (“tooth”), Yiddish צאָן (tson, “tooth”), Danish and Swedish tand (“tooth”), Faroese tonn (“tooth”), Icelandic tönn (“tooth”), Norn tann, tant (“tooth”), Norwegian Bokmål tann (“tooth”), Norwegian Nynorsk tann, tonn (“tooth”), Breton and Welsh dant (“tooth”), Cornish dans (“tooth”), Irish déad (“tooth”), Scottish Gaelic deud (“tooth”), Asturian, Leonese, Mirandese, and Spanish diente (“tooth”), Aragonese dien (“tooth”), Catalan and French dent (“tooth”), Galician, Italian, and Portuguese dente (“tooth”), Romanian dinte (“tooth”), Latin dēns (“tooth”), Ancient Greek ὀδούς (odoús), ὀδών (odṓn, “tooth”), Lithuanian dantis (“tooth”), Belarusian дзясна́ (dzjasná, “gum”), Bulgarian and Russian десна (desna, “gum”), Czech dáseň (“gum”), Polish dziąsło (“gum”), Serbo-Croatian dȇsni (“gum”), Slovak ďasno (“gum”), Slovene dlesni (“gum”), Ukrainian я́сна (jásna, “gum”), Armenian ատամ (atam, “tooth”), Ossetian дӕндаг (dændag, “tooth”), Baluchi دنتان (dantán), دتھاں (datʰāⁿ, “tooth”), Central Kurdish ددان (ddan, “tooth”), Northern Kurdish didan, diran (“tooth”), Persian دندان (dandân, “tooth”), Sanskrit दत् (dat), दन्त (danta, “tooth”).
The plural form is irregular: 'teeth'.
I have two tooths hurting.I have two teeth hurting.The noun has an irregular plural form 'teeth' rather than the standard '-s' ending.