Learner's definition of INSTRUCT
to teach (someone) a subject, skill, etc.
— usually + in or on
His friend instructed him in English.
Many doctors are instructing their patients on the importance of exercise.
She instructed us on how to interpret the text.
to give (someone) an order or command
— usually followed by to + verb
— often used as (be) instructed
to give an order or an explanation of a law to (a jury)
to hire (a lawyer) to represent you in a legal case