This is the 6374th most frequent Portuguese word.
derval
"Derval" is not a common Portuguese word; it is likely a proper name.
Here, 'Derval' is used as a proper noun referring to a person's name.
O Derval chegou cedo para a reunião.
Derval arrived early for the meeting.
In this sentence, 'Derval' is a nominal descriptor for a medicinal product.
O medicamento chamado Derval é muito eficaz contra dores.
The medicine called Derval is very effective against pain.
'Derval' is described as a term or expression within its cultural or linguistic usage.