1 [intransitive and transitive]TA
to turn over the earth using a plough so that seeds can be planted:
In those days the land was plowed by oxen.
2 [intransitive always + adverb/preposition]
to move with a lot of effort or force
plough through/up/across etc
We ploughed through the thick mud.
3 British English literary
to do a job or activity that is different from those done by other people, or to do it alone
plough aheadphrasal verb
plough ahead with
The government will plough ahead with tests this year, despite a boycott from teachers.
plough something ↔ backphrasal verb
plough into somebody/somethingphrasal verb
I plowed into the car in front.
plough onphrasal verb
plough through somethingphrasal verb
Most staff will never want to plough through the manuals that come with the software.
plough something ↔ upphrasal verb
Horses plough up the paths and make them muddy for walkers.