ἕνα [85 verses](noun sg masc acc) "One" is heis, which means "one" (as opposed to other numbers), "single," and "one and the same." This noun/adjective is irregular, having a number of forms depending on gender and case. It is always singular.  -- The Greek word translated as "one " means "one" (as opposed to other numbers), "single," and "one and the same."As in English, it can be used as a pronoun, meaning a single person.