| moteur |
| 1. n-m. motor, engine (datedef, from 1744) | |
| moteur Diesel - Diesel motor | |
| 2. n-m. (computing) engine | |
| moteur de recherche - search engine | |
| 3. n-m. (philosophy) mover; one who causes a movement datedef, from 1377 | |
| Selon Aristote, Dieu est le moteur non mû. - According to Aristotle, God is the unmoved mover. | |
| 4. n-m. (figuratively) driving force | |
| 5. adj. motive, driving (datedef, from 1558) | |
| auxiliaire |
| 1. adj. (chiefly grammar) auxiliary | |
| 2. n-m. (grammar) a helping verb, an auxiliary verb (verb that, having lost its literal meaning, joins itself to a certain form of another verb, for example to a past participle, to show a grammatical feature | |
| principal |
| 1. adj. main, key, principal | |
| l'un des principaux problèmes - one of the key problems | |
| les principales ethnies du pays - the principal ethnic groups of the country | |
| 2. n-m. someone or something which is important, key, paramount | |
| les principaux du royaume - the chief men of the kingdom | |
| 3. n-m. principal (school administrator) | |
| 4. n-m. (finance) principal (the money originally invested or loaned) | |
