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plow up (something)
1. To clear some pathway by digging into it with or as with a plow. (Usually spelled "plough" in British English.) I decided to plow up the road because it had become so uneven and overgrown with shrubs.
2. To damage a road or pathway with the use of a plow. The city trucks really plowed up the asphalt on our road when they cleared away the snow. It looks terrible now, and it's horribly bumpy to drive on!
3. To drive up or along some road or pathway with great, reckless haste. The cab driver plowed up the small mountain road at breakneck speed, nearly crashing into three different cars along the way.
4. To discover something as a result of uncovering it with a plow. I couldn't believe it when Jake plowed up an original Superman #1, wrapped in plastic and in mint condition. I plowed up Dad's cell phone this morning. He'd been looking for it all winter!
plow something up
to uncover something by plowing. The farmer plowed some old coins up and took them to the museum to find out what they were. He plowed up some valuable coins.