"ploughed" in the verb sense
1. plow, plough
move in a way resembling that of a plow cutting into or going through the soil
"The ship plowed through the water"
2. plow, plough, turn
to break and turn over earth especially with a plow
"Farmer Jones plowed his east field last week"
"turn the earth in the Spring"
"ploughed" in the adjective sense
1. plowed, ploughed
of farmland) broken and turned over with a plow
"plowed fields"
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License