Longman Dictionary of Contemporary English
low gear
noun
EXAMPLES FROM CORPUS
▪ Glover stayed in low gear for the crawl into town.
▪ He never left a low gear yet when I glanced over my shoulder he was miles clear.
▪ Just put it in a really low gear and floor it.
▪ Time passed in very low gear.
Wiktionary
low gear
n. 1 The lowest gearing available from a gearbox, typically in a motor vehicle or cycle. 2 One of the lower gearings available from a gearbox, typically in a motor vehicle or cycle.
WordNet
low gear
n. the lowest forward gear ratio in the gear box of a motor vehicle; used to start a car moving [syn: first gear, first, low]