The term retro or vintage referred to anything which was reflective of a past style of design or level of technological development.
In 2375, a Silver Blood copy of Tom Paris suggested to B'Elanna Torres's counterpart that they could drive a vintage Duesenberg up Michigan Avenue in a holoprogram of 1928 Chicago, among other activities, during their honeymoon. (VOY: "Course: Oblivion")
(LD: "Starbase 80?!")
In 2401, Jack Crusher expressed his admiration for the Constitution II class, describing it as having "All those perfectly clean retro lines." (PIC: "The Bounty")
In 2401, Deanna Troi claimed that the Troi-Riker house looked "like it was designed by a cabal of retro prairie hipsters." (PIC: "Surrender")
In 3188, Ithyk asked Michael Burnham where she had gotten her vintage gear. (DIS: "That Hope Is You, Part 1")