four-by-four
US /ˌfɔːr.baɪˈfɔːr/
UK /ˌfɔːr.baɪˈfɔːr/
1.
a vehicle with four-wheel drive, especially a jeep or Land Rover
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We need a four-by-four to get through this muddy track.
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He drives an old military four-by-four.
1.
having four-wheel drive
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The new model is available with a four-by-four option.
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They bought a four-by-four truck for their farm.