| Serpentes | Snake |
| serpenti | snake |
| serpentinite | serpentinite |
| Serpico | Serpico |
| Serpiente | Serpiente |
| Serpuchov | Serpukhov |
| Serpulidae | Serpulidae |
| serra | greenhouse |
| serra calda | greenhouse |
| Serra da Estrela | Serra da Estrela |
| Serraglia | Key |
| serraglio | seraglio |
| Serranidae | Serranidae |
| Serranus scriba | Painted Comber |
| serrapollici | thumbscrew |
| Serrara Fontana | Serrara Fontana |
| serrare | furl |
| serrare i ranghi | close ranks |
| serrare le fila | close ranks |
| serrata | lockout |
| serrato | close |
| serratura | lock |
| serratura a combinazione | combination lock |
| serratura a due mandate | double lock |
| serrature | locks |
| Serravalliano | Serravallian |
| Serre | Greenhouse |
| Serres | Serres |
| Serrières | Serrières |
| Serse | Xerxes |
| Serse I di Persia | Xerxes I of Persia |
| Serse II di Persia | Xerxes II of Persia |
| Sersheim | Sersheim |
| Sertab Erener | Sertab Erener |
| serto d'alloro | laurel wreath |
| Sertã | Sertã |
| Sertão | Sertão |
| serva della gleba | serf |
| Servaggio | Serfdom |
| servalo | serval |
| Servas | Servas Open Doors |
| servente | conducing |
| server | server |
| Server Side Include | Server Side Includes |
| Servette Football Club Geneve | Servette FC |
| Servette Football Club Genève | Servette FC |
| Servi di Maria | Servite Order |
| Service de santé des armées | French Defence Health service |
| Service-oriented architecture | Service-oriented architecture |
| Serviente | Server |
| servile | slavish |
| Servilia Caepionis | Servilia Caepionis |
| servilismo | servility |
| servilità | servility |
| Servio Mario Onorato | Maurus Servius Honoratus |
| Servio Sulpicio Galba | Galba |
| Servio Tullio | Servius Tullius |
| Servion | Servion |
| servire | attend to |
