This is the 13548th most frequent Russian word.
научил
"Taught."
The word "научил" is used to indicate that someone (the subject) imparted knowledge or skills to someone else (the object).
Он научил меня играть на гитаре.
He taught me how to play the guitar.
Here, "научила" demonstrates the action of transferring specific culinary knowledge or skill from the teacher (mom) to the learner (me).
Моя мама научила меня готовить борщ.
My mom taught me how to cook borscht.
In this sentence, "научил" conveys the instruction or teaching of fundamental concepts by the teacher to the students.