1. A person who teaches or provides instruction in a particular subject or skill
The swimming instructor taught the children how to swim safely.
A instrutora de natação ensinou as crianças a nadar com segurança.
2. A person employed to teach a practical skill or sport
He works as a fitness instructor at the gym.
Ele trabalha como instrutor de fitness na academia.
3. In higher education, a teaching position below the rank of assistant professor
The instructor assigned homework to the class.
O instrutor atribuiu lição de casa à turma.