This word is use to call(address) to a closer friend who is just like a brother...very simillar to the "Hey bro" in English
Priya means a beloved or dear person.
Though the actual meaning of Swini has not been answered. Logically I think it might be the Ray of anything. Because this word has been used in the names like Tejaswini which means the ray of the...
knowledge thet is revealed to, or discovered by, the wise man of Hinduism.
Tanvi means a Delicate girl :)
Jivan means life .