A skimmer was a type of small auxiliary vehicle designed for atmospheric flight.
While teaching languages in a Brazilian university, Hoshi Sato once accompanied two other teachers on a hydro-skimmer to a small tributary of the Amazon River. (ENT: "Fight or Flight")
The Cardassians used skimmers to transport ground forces during the Occupation of Bajor. (DS9: "The Darkness and the Light")
Major Kira Nerys wore a Bajoran earring, which was made for her by Lupaza using diamide-laced beritium salvaged from a Cardassian skimmer ambushed by the Shakaar resistance cell. (DS9: "The Search, Part I", "The Darkness and the Light")
A raid conducted by the Shakaar resistance cell with four mortar rounds on the central compound resulted in the destruction of five skimmers and the deaths of fifteen Cardassians. (DS9: "Ties of Blood and Water")
The Proxcinians purchased 7,000 tritanium-plated assault skimmers through Hagath and Gaila's arms business for the Proxcinian War. (DS9: "Business as Usual")