pro (noun) /pɹoʊ/
1
An advantage of something, especially when contrasted with its disadvantages (cons).
2
A person who supports a concept or principle.
3
A professional sportsman.
4
(colloquial) Professional.
5
(slang) A prostitute.
6
(slang, historical) A chemical prophylaxis taken after sex to avoid contracting venereal disease.
pro (adjective) /pɹoʊ/
1
Professional.
pro (preposition) /pɹoʊ/
1
In favor of.