It is the name of a city and a county in the state of California in the United States. Name of a river and a valley, in that same region. It is well known for the quality of its vineyards.
NAPA: In germania, buttock.
Tanned skins of animals
Napa, arable Plains between mountains that has plenty of water in the basement
Napa underground: underground water reserve.
offence for a person who knows nothing new