Retornam
Retornam is the present indicative, third-person plural form of the Portuguese verb retornar, meaning to return or come back. It corresponds to eles/elas/vocês in present tense, so it translates to "they return" or, with the pronoun você/ustedes, "you (plural) return" in standard usage.
In use, retornam appears with a plural subject. Examples: Eles retornam amanhã. (They return tomorrow.) Vocês
Etymology and related forms: retornam derives from Latin retornare, formed from re- meaning back and tornare