To formally record information, thoroughly search or inspect, or enroll oneself in a system
Encoding Strategies:
linguistic

register
register
+
-ar
verb suffix
Registrar means to register and is a direct cognate of the English word.
registrar
to register, to record
To register or record something officially in a formal system or database.
- Registramos tu nacimiento en el ayuntamiento = We registered your birth at the town hall
- La enfermera registró los datos del paciente = The nurse recorded the patient's data
to search, to inspect
To search or inspect something thoroughly, often for security or investigative purposes. When you thoroughly search a space, you're systematically going through and checking everything that needs to be registered or accounted for.
- La policía registró la casa buscando pruebas = The police searched the house looking for evidence
- Registraron mi maleta en el aeropuerto = They inspected my suitcase at the airport
registrarse
to check in, to sign up, to register oneself
To check in, sign up, or register oneself in a system, event, or service.
- Me registré en el hotel ayer = I checked in at the hotel yesterday
- Nos registramos para el curso de español = We signed up for the Spanish course