adj.
1.most important element principal n.
1.the original amount of a debt on which interest is calculated
2.the educator who has executive authority for a school
3.an actor who plays a principal role
4.capital as contrasted with the income derived from it
5.the major party to a financial transaction at a stock exchange
Idiom of the Day
hold one's end of the bargain up
to do what you have agreed to do
The students did not hold their end of the bargain up when they did not do their homework.