Here is what each character's name really means:
Feyre- beautiful/ fairy or elf
Rhysand- perfection/ bringer of darkness
Nyx- night
Azriel- God is my help
Cassian- hollow, empty
Morrigan/ Mor- great queen
Nesta- pure
Amren- powerful, clever, logical mind
Elain- sun ray/ fawn
Gwyneth/ Gwyn- joy
Emerie- winner
Lucien- light
Tamlin- independent
Let me know if u want a part 2
I'm surprised some of them actually equal the character lol. I think I know where SJM gets her ideas for character's names from :)