1. one (out of several) (dated)

2. someone, somebody, anyone, anybody (in the masculine singular)

3. (colloquial) (a) somebody (someone singular or notable, i.e., who stands apart from most others in importance, skill, merit, etc.) (in the masculine singular)

4. some (in the plural; used with de, en or an antecedent)

5. some people, certain (in the masculine plural)