tipping. 1  transitive verb. 2  1a : to furnish with a tipb (1) : to cover or adorn the tip of (2) : to blend (furs) for improved appearance by brushing the tips of the hair with dye. 3  2 : to affix (an insert) in a book âoften used with in.  3 : to remove the ends of tip raspberries.
A principal is an individual who directs and monitors the academic and nonacademic activities within a school environment. The principal is the individual who plans and implements the daily routines within an educational setting.
Princeton's WordNet(4.50 / 4 votes)Rate this definition: 1  principal(noun) the original amount of a debt on which interest is calculated. 2  principal, school principal, head teacher, head(noun) the educator who has executive authority for a school. 3  star, principal, lead(noun) an actor who plays a principal role.