Does 14k in a ring mean its real?

Yes it does. Karat means the amount of pure gold; the most commonly used gold is 14k and 18k, which means the percentage of gold is 58.3% and 75% respectively.
If the stamp in your ring says 14KT then yes your ring is real gold. If your item doesn't look real or you have doubts you can always take it to a jewelry store to be checked out.