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
pins and needles
a tingling feeling in one's arms and legs, a feeling of excitement
I was on pins and needles all day as I waited to hear the results of the exam.