Meanings (ES + gloss)
sobremarcha • superdirecta
A gear, on an automobile, higher than the traditional top gear, mainly to allow better fuel economy at highway speeds. In the 21st century, such gears are no longer viewed as "extra" and thus rarely called by this name.
In the 1970s, many transmission designs were revised to add an overdrive gear.
Near-synonym: top gear
Word forms