This is the 620th most frequent Portuguese word.
elétrica
"Elétrica" means "electric" in English.
Here, 'elétrica' is an attributive adjective modifying 'churrasqueira', describing the barbecue grill as powered by electricity.
A churrasqueira elétrica é muito prática para churrascos rápidos.
The electric barbecue grill is very practical for quick barbecues.
In this sentence, 'elétrica' functions as an attributive adjective defining the specialized field of the engineer.
Ela é uma engenheira elétrica especializada em sistemas de potência.
She is an electrical engineer specialized in power systems.
In this context, 'elétrica' describes the nature of the failure, indicating it is related to electricity.