| Part of speech | common noun |
|---|---|
| Pronunciation | /bæk/ |
| Hyphenation | back |
| Shavian alphabet | 𐑚𐑨𐑒 |
| Deseret alphabet | 𐐺𐐰𐐿 |
| Plural | backs |
| Afrikaans | rug |
|---|---|
| Catalan | esquena |
| Czech | hřbet; záda |
| Danish | ryg |
| Dutch | rug |
| English (Old English) | bæc |
| Esperanto | dorso |
| Faeroese | bak; ryggur |
| Finnish | selkä |
| French | dos |
| German | Rücken |
| Greek | νώτα; πάχη; πλάτη |
| Hawaiian | kua |
| Hungarian | hát |
| Italian | dorso |
| Kabylian | aɛrur; azagur |
| Latin | dorsum |
| Luxemburgish | Réck |
| Malay | belakang; punggung |
| Norwegian | rygg |
| Papiamento | lomba |
| Polish | plecy |
| Portuguese | costas; dorso |
| Romanian | spate |
| Russian | спина |
| Saterland Frisian | Rääch |
| Scottish Gaelic | druim |
| Spanish | dorso; reverso |
| Sranan | baka |
| Swedish | rygg |
| Thai | หลัง |
| West Frisian | rêch |
| Yiddish | פּלייצע; רוקן |