Wiktionary
four-speed
alt. 1 (context attributive of a transmission English) Having four forward speeds. 2 A vehicle with a transmission that has four forward speeds. It might or might not be a manual transmission. n. 1 (context attributive of a transmission English) Having four forward speeds. 2 A vehicle with a transmission that has four forward speeds. It might or might not be a manual transmission.
Usage examples of "four-speed".
The sweeper had standard four-speed transmission, and he stood outside the open door, ready to shift it into second gear, skipping first so the big vehicle would gain speed faster.