This is the 4236th most frequent Portuguese word.
wlbt
The term "wlbt" does not appear to be a valid Portuguese word.
Here, 'WLBT' is used to refer to a proper noun, presumably a broadcast signal or a station identifier.
O sinal WLBT foi interrompido durante a tempestade.
The WLBT signal was interrupted during the storm.
In this sentence, 'WLBT' indicates a specific television channel or station.
Assisti a um programa interessante no WLBT ontem à noite.
I watched an interesting show on WLBT last night.
Here, 'WLBT' refers to an entity providing weather coverage, likely a media outlet.