This is the 1590th most frequent Portuguese word.
sinais
"Signs" or "signals."
In this sentence, 'sinais' refers to 'signs' as visual markers or indicators used in traffic to convey information or warnings.
Os sinais de trânsito são importantes para a segurança.
Traffic signs are important for safety.
Here, 'sinais' is used to mean 'signs' as indications or manifestations of a change or condition.
Ela percebeu sinais de melhora na saúde.
She noticed signs of improvement in health.
In this instance, 'sinais' refers to 'signals' as electronic transmissions or communications from a satellite.