Longman Dictionary of Contemporary English
Wiktionary
n. The first gear of an engine, which provides the lowest output speed and greatest mechanical advantage.
WordNet
Usage examples of "first gear".
With a splintering crash barely audible above the roaring of the engine at maximum revs in first gear, the Mercedes went through the barrier as if it had been made of cardboard, shot out over the edge of the cliff and disappeared from sight.
Chip already had the tractor in first gear, and Virginia was off, chainsaw in hand, chivvying the rats from their argument about who'd won.
After setting Pitt on the floor between the big diesels where he could get warm again, Giordino climbed back into the icy control cabin, sat behind the steering wheel, and engaged first gear.
Then into first gear, forgetting the cars and letting the beast wind out.
It seemed most of his ventures were companies stuck in first gear that seemed to sprint ahead on paper but in reality were stretched to the limits to meet growth and debt demands.