To see the letter "N" in your dream implies the end of some habit, journey, relationship or condition.
Nachos
To make or eat nachos in your dream signifies your need for more leisurely pursuits. You need to take some time out.
Nag
To dream that someone is nagging you suggests that you need to change your attitudes about your preconceived notions. It is time to make some changes in your life. You need to look at things from a different perspective.
To dream that you are nagging someone indicates that you need to confront some repressed resentment or unexpressed anger.
Nail File
To see a nail file in your dream suggests that you need to smooth out the rough edges of your personality or your relationship with others. You may be a little too harsh and too abrasive toward others.
Nail Polish
To polish your nails in your dream suggests that you need to put more focus onto what you are doing and what you are trying to accomplish.
To dream that you are changing your nail polish color represents your creativeness or emotional nature.
Look up the color of the nail polish for additional significance. In particular, to see blue, green black, purple or other non-traditional nail polish color in your dream represents your free spirit. You like to express yourself in unique ways. If you see clear nail polish in your dream, then it signifies your objectiveness in a situation.
Nails
To hammer nails in your dream represent your tenacity, persistence and ability to drive a hard bargain. Also consider the pun, "getting nailed" which refers to a sexual innuendo or which means getting caught with something. Alternatively, the dream may also point to another popular phrase "hitting the nail on the head", which suggests that you have fully resolved a situation.
To see nails in your dream symbolize long and hard work for little compensation and pay. It may also be analogous to some rugged or tough force.
To dream that you hurt yourself with a nail suggests that you need to be careful with what you say.