What is "juventia"

The gens Juventia, occasionally written Jubentia, was an ancient plebeian family at Rome. After centuries of obscurity, the gens emerges into history with the appearance of Titus Juventius, a military tribune, in the beginning of the second century BC. The first of the Juventii to obtain the consulship was Marcus Juventius Thalna in BC 163. But the family is renowned less for its statesmen than for its jurists, who flourished during the second century AD.