use Principal in a sentence
[adjective] Most important;
The veins and arteries are the principal pathways of the human circulatory system.
I have two principal values in my life, honesty and loyalty.
Today, most cacao, the principal ingredient in chocolate, is grown on conventional farms.
One of the principal aims of this class is to improve your speaking skills.
[noun] The original amount of a debt without interest calculated;
We need $4,400 to pay off the principal on the house loan.
the head of a school;
The principal has expelled three students for beating up another boy.
The principal has called an assembly for grade twelve students at noon to discuss plans for the graduation party.
The young boy walked calmly into the principal’s office to complain about his teacher.